WebKitSite/blog/wp-admin/admin-functions.php

<?php

function write_post() {
	$result = wp_write_post();
	if( is_wp_error( $result ) )
		wp_die( $result->get_error_message() );
	else
		return $result;
}

// Creates a new post from the "Write Post" form using $_POST information.
function wp_write_post() {
	global $user_ID;

	if ( 'page' == $_POST['post_type'] ) {
		if ( !current_user_can( 'edit_pages' ) )
			return new WP_Error( 'edit_pages', __( 'You are not allowed to create pages on this blog.' ) );
	} else {
		if ( !current_user_can( 'edit_posts' ) )
			return new WP_Error( 'edit_posts', __( 'You are not allowed to create posts or drafts on this blog.' ) );
	}


	// Check for autosave collisions
	$temp_id = false;
	if ( isset($_POST['temp_ID']) ) {
		$temp_id = (int) $_POST['temp_ID'];
		if ( !$draft_ids = get_user_option( 'autosave_draft_ids' ) )
			$draft_ids = array();
		foreach ( $draft_ids as $temp => $real )
			if ( time() + $temp > 86400 ) // 1 day: $temp is equal to -1 * time( then )
				unset($draft_ids[$temp]);

		if ( isset($draft_ids[$temp_id]) ) { // Edit, don't write
			$_POST['post_ID'] = $draft_ids[$temp_id];
			unset($_POST['temp_ID']);
			update_user_option( $user_ID, 'autosave_draft_ids', $draft_ids );
			return edit_post();
		}
	}

	// Rename.
	$_POST['post_content'] = $_POST['content'];
	$_POST['post_excerpt'] = $_POST['excerpt'];
	$_POST['post_parent'] = $_POST['parent_id'];
	$_POST['to_ping'] = $_POST['trackback_url'];

	if (!empty ( $_POST['post_author_override'] ) ) {
		$_POST['post_author'] = (int) $_POST['post_author_override'];
	} else {
		if (!empty ( $_POST['post_author'] ) ) {
			$_POST['post_author'] = (int) $_POST['post_author'];
		} else {
			$_POST['post_author'] = (int) $_POST['user_ID'];
		}

	}

	if ( $_POST['post_author'] != $_POST['user_ID'] ) {
		if ( 'page' == $_POST['post_type'] ) {
			if ( !current_user_can( 'edit_others_pages' ) )
				return new WP_Error( 'edit_others_pages', __( 'You are not allowed to create pages as this user.' ) );
		} else {
			if ( !current_user_can( 'edit_others_posts' ) )
				return new WP_Error( 'edit_others_posts', __( 'You are not allowed to post as this user.' ) );

		}
	}

	// What to do based on which button they pressed
	if ('' != $_POST['saveasdraft'] )
		$_POST['post_status'] = 'draft';
	if ('' != $_POST['saveasprivate'] )
		$_POST['post_status'] = 'private';
	if ('' != $_POST['publish'] )
		$_POST['post_status'] = 'publish';
	if ('' != $_POST['advanced'] )
		$_POST['post_status'] = 'draft';

	if ( 'page' == $_POST['post_type'] ) {
		if ('publish' == $_POST['post_status'] && !current_user_can( 'publish_pages' ) )
			$_POST['post_status'] = 'draft';
	} else {
		if ('publish' == $_POST['post_status'] && !current_user_can( 'publish_posts' ) )
			$_POST['post_status'] = 'draft';
	}

	if (!isset( $_POST['comment_status'] ))
		$_POST['comment_status'] = 'closed';

	if (!isset( $_POST['ping_status'] ))
		$_POST['ping_status'] = 'closed';

	if (!empty ( $_POST['edit_date'] ) ) {
		$aa = $_POST['aa'];
		$mm = $_POST['mm'];
		$jj = $_POST['jj'];
		$hh = $_POST['hh'];
		$mn = $_POST['mn'];
		$ss = $_POST['ss'];
		$jj = ($jj > 31 ) ? 31 : $jj;
		$hh = ($hh > 23 ) ? $hh -24 : $hh;
		$mn = ($mn > 59 ) ? $mn -60 : $mn;
		$ss = ($ss > 59 ) ? $ss -60 : $ss;
		$_POST['post_date'] = sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $aa, $mm, $jj, $hh, $mn, $ss );
		$_POST['post_date_gmt'] = get_gmt_from_date( $_POST['post_date'] );
	}

	// Create the post.
	$post_ID = wp_insert_post( $_POST );

	add_meta( $post_ID );

	// Reunite any orphaned attachments with their parent
	if ( !$draft_ids = get_user_option( 'autosave_draft_ids' ) )
		$draft_ids = array();
	if ( $draft_temp_id = (int) array_search( $post_ID, $draft_ids ) )
		relocate_children( $draft_temp_id, $post_ID );
	if ( $temp_id && $temp_id != $draft_temp_id )
		relocate_children( $temp_id, $post_ID );

	// Update autosave collision detection
	if ( $temp_id ) {
		$draft_ids[$temp_id] = $post_ID;
		update_user_option( $user_ID, 'autosave_draft_ids', $draft_ids );
	}

	// Now that we have an ID we can fix any attachment anchor hrefs
	fix_attachment_links( $post_ID );

	return $post_ID;
}

// Move child posts to a new parent
function relocate_children( $old_ID, $new_ID ) {
	global $wpdb;
	$old_ID = (int) $old_ID;
	$new_ID = (int) $new_ID;
	return $wpdb->query( "UPDATE $wpdb->posts SET post_parent = $new_ID WHERE post_parent = $old_ID" );
}

// Replace hrefs of attachment anchors with up-to-date permalinks.
function fix_attachment_links( $post_ID ) {
	global $wp_rewrite;

	$post = & get_post( $post_ID, ARRAY_A );

	$search = "#<a[^>]+rel=('|\")[^'\"]*attachment[^>]*>#ie";

	// See if we have any rel="attachment" links
	if ( 0 == preg_match_all( $search, $post['post_content'], $anchor_matches, PREG_PATTERN_ORDER ) )
		return;

	$i = 0;
	$search = "#[\s]+rel=(\"|')(.*?)wp-att-(\d+)\\1#i";
	foreach ( $anchor_matches[0] as $anchor ) {
		if ( 0 == preg_match( $search, $anchor, $id_matches ) )
			continue;

		$id = (int) $id_matches[3];

		// While we have the attachment ID, let's adopt any orphans.
		$attachment = & get_post( $id, ARRAY_A );
		if ( ! empty( $attachment) && ! is_object( get_post( $attachment['post_parent'] ) ) ) {
			$attachment['post_parent'] = $post_ID;
			// Escape data pulled from DB.
			$attachment = add_magic_quotes( $attachment);
			wp_update_post( $attachment);
		}

		$post_search[$i] = $anchor;
		$post_replace[$i] = preg_replace( "#href=(\"|')[^'\"]*\\1#e", "stripslashes( 'href=\\1' ).get_attachment_link( $id ).stripslashes( '\\1' )", $anchor );
		++$i;
	}

	$post['post_content'] = str_replace( $post_search, $post_replace, $post['post_content'] );

	// Escape data pulled from DB.
	$post = add_magic_quotes( $post);

	return wp_update_post( $post);
}

// Update an existing post with values provided in $_POST.
function edit_post() {
	global $user_ID;

	$post_ID = (int) $_POST['post_ID'];

	if ( 'page' == $_POST['post_type'] ) {
		if ( !current_user_can( 'edit_page', $post_ID ) )
			wp_die( __('You are not allowed to edit this page.' ));
	} else {
		if ( !current_user_can( 'edit_post', $post_ID ) )
			wp_die( __('You are not allowed to edit this post.' ));
	}

	// Autosave shouldn't save too soon after a real save
	if ( 'autosave' == $_POST['action'] ) {
		$post =& get_post( $post_ID );
		$now = time();
		$then = strtotime($post->post_date_gmt . ' +0000');
		// Keep autosave_interval in sync with autosave-js.php.
		$delta = apply_filters( 'autosave_interval', 120 ) / 2;
		if ( ($now - $then) < $delta )
			return $post_ID;
	}

	// Rename.
	$_POST['ID'] = (int) $_POST['post_ID'];
	$_POST['post_content'] = $_POST['content'];
	$_POST['post_excerpt'] = $_POST['excerpt'];
	$_POST['post_parent'] = $_POST['parent_id'];
	$_POST['to_ping'] = $_POST['trackback_url'];

	if (!empty ( $_POST['post_author_override'] ) ) {
		$_POST['post_author'] = (int) $_POST['post_author_override'];
	} else
		if (!empty ( $_POST['post_author'] ) ) {
			$_POST['post_author'] = (int) $_POST['post_author'];
		} else {
			$_POST['post_author'] = (int) $_POST['user_ID'];
		}

	if ( $_POST['post_author'] != $_POST['user_ID'] ) {
		if ( 'page' == $_POST['post_type'] ) {
			if ( !current_user_can( 'edit_others_pages' ) )
				wp_die( __('You are not allowed to edit pages as this user.' ));
		} else {
			if ( !current_user_can( 'edit_others_posts' ) )
				wp_die( __('You are not allowed to edit posts as this user.' ));

		}
	}

	// What to do based on which button they pressed
	if ('' != $_POST['saveasdraft'] )
		$_POST['post_status'] = 'draft';
	if ('' != $_POST['saveasprivate'] )
		$_POST['post_status'] = 'private';
	if ('' != $_POST['publish'] )
		$_POST['post_status'] = 'publish';
	if ('' != $_POST['advanced'] )
		$_POST['post_status'] = 'draft';

	if ( 'page' == $_POST['post_type'] ) {
		if ('publish' == $_POST['post_status'] && !current_user_can( 'edit_published_pages' ))
			$_POST['post_status'] = 'draft';
	} else {
		if ('publish' == $_POST['post_status'] && !current_user_can( 'edit_published_posts' ))
			$_POST['post_status'] = 'draft';
	}

	if (!isset( $_POST['comment_status'] ))
		$_POST['comment_status'] = 'closed';

	if (!isset( $_POST['ping_status'] ))
		$_POST['ping_status'] = 'closed';

	if (!empty ( $_POST['edit_date'] ) ) {
		$aa = $_POST['aa'];
		$mm = $_POST['mm'];
		$jj = $_POST['jj'];
		$hh = $_POST['hh'];
		$mn = $_POST['mn'];
		$ss = $_POST['ss'];
		$jj = ($jj > 31 ) ? 31 : $jj;
		$hh = ($hh > 23 ) ? $hh -24 : $hh;
		$mn = ($mn > 59 ) ? $mn -60 : $mn;
		$ss = ($ss > 59 ) ? $ss -60 : $ss;
		$_POST['post_date'] = "$aa-$mm-$jj $hh:$mn:$ss";
		$_POST['post_date_gmt'] = get_gmt_from_date( "$aa-$mm-$jj $hh:$mn:$ss" );
	}

	// Meta Stuff
	if ( $_POST['meta'] ) {
		foreach ( $_POST['meta'] as $key => $value )
			update_meta( $key, $value['key'], $value['value'] );
	}

	if ( $_POST['deletemeta'] ) {
		foreach ( $_POST['deletemeta'] as $key => $value )
			delete_meta( $key );
	}

	add_meta( $post_ID );

	wp_update_post( $_POST );

	// Reunite any orphaned attachments with their parent
	if ( !$draft_ids = get_user_option( 'autosave_draft_ids' ) )
		$draft_ids = array();
	if ( $draft_temp_id = (int) array_search( $post_ID, $draft_ids ) )
		relocate_children( $draft_temp_id, $post_ID );

	// Now that we have an ID we can fix any attachment anchor hrefs
	fix_attachment_links( $post_ID );

	return $post_ID;
}

function edit_comment() {
	global $user_ID;

	$comment_ID = (int) $_POST['comment_ID'];
	$comment_post_ID = (int) $_POST['comment_post_ID'];

	if (!current_user_can( 'edit_post', $comment_post_ID ))
		wp_die( __('You are not allowed to edit comments on this post, so you cannot edit this comment.' ));

	$_POST['comment_author'] = $_POST['newcomment_author'];
	$_POST['comment_author_email'] = $_POST['newcomment_author_email'];
	$_POST['comment_author_url'] = $_POST['newcomment_author_url'];
	$_POST['comment_approved'] = $_POST['comment_status'];
	$_POST['comment_content'] = $_POST['content'];
	$_POST['comment_ID'] = (int) $_POST['comment_ID'];

	if (!empty ( $_POST['edit_date'] ) ) {
		$aa = $_POST['aa'];
		$mm = $_POST['mm'];
		$jj = $_POST['jj'];
		$hh = $_POST['hh'];
		$mn = $_POST['mn'];
		$ss = $_POST['ss'];
		$jj = ($jj > 31 ) ? 31 : $jj;
		$hh = ($hh > 23 ) ? $hh -24 : $hh;
		$mn = ($mn > 59 ) ? $mn -60 : $mn;
		$ss = ($ss > 59 ) ? $ss -60 : $ss;
		$_POST['comment_date'] = "$aa-$mm-$jj $hh:$mn:$ss";
	}

	wp_update_comment( $_POST);
}

// Get an existing post and format it for editing.
function get_post_to_edit( $id ) {

	$post = get_post( $id );

	$post->post_content = format_to_edit( $post->post_content, user_can_richedit() );
	$post->post_content = apply_filters( 'content_edit_pre', $post->post_content);

	$post->post_excerpt = format_to_edit( $post->post_excerpt);
	$post->post_excerpt = apply_filters( 'excerpt_edit_pre', $post->post_excerpt);

	$post->post_title = format_to_edit( $post->post_title );
	$post->post_title = apply_filters( 'title_edit_pre', $post->post_title );

	$post->post_password = format_to_edit( $post->post_password );

	if ( $post->post_type == 'page' )
		$post->page_template = get_post_meta( $id, '_wp_page_template', true );

	return $post;
}

// Default post information to use when populating the "Write Post" form.
function get_default_post_to_edit() {
	if ( !empty( $_REQUEST['post_title'] ) )
		$post_title = wp_specialchars( stripslashes( $_REQUEST['post_title'] ));
	else if ( !empty( $_REQUEST['popuptitle'] ) ) {
		$post_title = wp_specialchars( stripslashes( $_REQUEST['popuptitle'] ));
		$post_title = funky_javascript_fix( $post_title );
	} else {
		$post_title = '';
	}

	if ( !empty( $_REQUEST['content'] ) )
		$post_content = wp_specialchars( stripslashes( $_REQUEST['content'] ));
	else if ( !empty( $post_title ) ) {
		$text       = wp_specialchars( stripslashes( urldecode( $_REQUEST['text'] ) ) );
		$text       = funky_javascript_fix( $text);
		$popupurl   = clean_url($_REQUEST['popupurl']);
        $post_content = '<a href="'.$popupurl.'">'.$post_title.'</a>'."\n$text";
    }

	if ( !empty( $_REQUEST['excerpt'] ) )
		$post_excerpt = wp_specialchars( stripslashes( $_REQUEST['excerpt'] ));
	else
		$post_excerpt = '';

	$post->post_status = 'draft';
	$post->comment_status = get_option( 'default_comment_status' );
	$post->ping_status = get_option( 'default_ping_status' );
	$post->post_pingback = get_option( 'default_pingback_flag' );
	$post->post_category = get_option( 'default_category' );
	$post->post_content = apply_filters( 'default_content', $post_content);
	$post->post_title = apply_filters( 'default_title', $post_title );
	$post->post_excerpt = apply_filters( 'default_excerpt', $post_excerpt);
	$post->page_template = 'default';
	$post->post_parent = 0;
	$post->menu_order = 0;

	return $post;
}

function get_comment_to_edit( $id ) {
	$comment = get_comment( $id );

	$comment->comment_content = format_to_edit( $comment->comment_content, user_can_richedit() );
	$comment->comment_content = apply_filters( 'comment_edit_pre', $comment->comment_content);

	$comment->comment_author = format_to_edit( $comment->comment_author );
	$comment->comment_author_email = format_to_edit( $comment->comment_author_email );
	$comment->comment_author_url = format_to_edit( $comment->comment_author_url );

	return $comment;
}

function get_category_to_edit( $id ) {
	$category = get_category( $id );

	return $category;
}

function wp_dropdown_roles( $default = false ) {
	global $wp_roles;
	$r = '';
	foreach( $wp_roles->role_names as $role => $name )
		if ( $default == $role ) // Make default first in list
			$p = "\n\t<option selected='selected' value='$role'>$name</option>";
		else
			$r .= "\n\t<option value='$role'>$name</option>";
	echo $p . $r;
}


function get_user_to_edit( $user_id ) {
	$user = new WP_User( $user_id );
	$user->user_login   = attribute_escape($user->user_login);
	$user->user_email   = attribute_escape($user->user_email);
	$user->user_url     = clean_url($user->user_url);
	$user->first_name   = attribute_escape($user->first_name);
	$user->last_name    = attribute_escape($user->last_name);
	$user->display_name = attribute_escape($user->display_name);
	$user->nickname     = attribute_escape($user->nickname);
	$user->aim          = attribute_escape($user->aim);
	$user->yim          = attribute_escape($user->yim);
	$user->jabber       = attribute_escape($user->jabber);
	$user->description  =  wp_specialchars($user->description);

	return $user;
}

// Creates a new user from the "Users" form using $_POST information.

function add_user() {
	if ( func_num_args() ) { // The hackiest hack that ever did hack
		global $current_user, $wp_roles;
		$user_id = (int) func_get_arg( 0 );

		if ( isset( $_POST['role'] ) ) {
			if( $user_id != $current_user->id || $wp_roles->role_objects[$_POST['role']]->has_cap( 'edit_users' ) ) {
				$user = new WP_User( $user_id );
				$user->set_role( $_POST['role'] );
			}
		}
	} else {
		add_action( 'user_register', 'add_user' ); // See above
		return edit_user();
	}
}

function edit_user( $user_id = 0 ) {
	global $current_user, $wp_roles, $wpdb;
	if ( $user_id != 0 ) {
		$update = true;
		$user->ID = (int) $user_id;
		$userdata = get_userdata( $user_id );
		$user->user_login = $wpdb->escape( $userdata->user_login );
	} else {
		$update = false;
		$user = '';
	}

	if ( isset( $_POST['user_login'] ))
		$user->user_login = wp_specialchars( trim( $_POST['user_login'] ));

	$pass1 = $pass2 = '';
	if ( isset( $_POST['pass1'] ))
		$pass1 = $_POST['pass1'];
	if ( isset( $_POST['pass2'] ))
		$pass2 = $_POST['pass2'];

	if ( isset( $_POST['role'] ) && current_user_can( 'edit_users' ) ) { 
		if( $user_id != $current_user->id || $wp_roles->role_objects[$_POST['role']]->has_cap( 'edit_users' ))
			$user->role = $_POST['role'];
	}

	if ( isset( $_POST['email'] ))
		$user->user_email = wp_specialchars( trim( $_POST['email'] ));
	if ( isset( $_POST['url'] ) ) {
		$user->user_url = clean_url( trim( $_POST['url'] ));
		$user->user_url = preg_match('/^(https?|ftps?|mailto|news|irc|gopher|nntp|feed|telnet):/is', $user->user_url) ? $user->user_url : 'http://'.$user->user_url;
	}
	if ( isset( $_POST['first_name'] ))
		$user->first_name = wp_specialchars( trim( $_POST['first_name'] ));
	if ( isset( $_POST['last_name'] ))
		$user->last_name = wp_specialchars( trim( $_POST['last_name'] ));
	if ( isset( $_POST['nickname'] ))
		$user->nickname = wp_specialchars( trim( $_POST['nickname'] ));
	if ( isset( $_POST['display_name'] ))
		$user->display_name = wp_specialchars( trim( $_POST['display_name'] ));
	if ( isset( $_POST['description'] ))
		$user->description = trim( $_POST['description'] );
	if ( isset( $_POST['jabber'] ))
		$user->jabber = wp_specialchars( trim( $_POST['jabber'] ));
	if ( isset( $_POST['aim'] ))
		$user->aim = wp_specialchars( trim( $_POST['aim'] ));
	if ( isset( $_POST['yim'] ))
		$user->yim = wp_specialchars( trim( $_POST['yim'] ));
	if ( !$update )
		$user->rich_editing = 'true';  // Default to true for new users.
	else if ( isset( $_POST['rich_editing'] ) )
		$user->rich_editing = $_POST['rich_editing'];
	else
		$user->rich_editing = 'false';

	$errors = new WP_Error();

	/* checking that username has been typed */
	if ( $user->user_login == '' )
		$errors->add( 'user_login', __( '<strong>ERROR</strong>: Please enter a username.' ));

	/* checking the password has been typed twice */
	do_action_ref_array( 'check_passwords', array ( $user->user_login, & $pass1, & $pass2 ));

	if (!$update ) {
		if ( $pass1 == '' || $pass2 == '' )
			$errors->add( 'pass', __( '<strong>ERROR</strong>: Please enter your password twice.' ));
	} else {
		if ((empty ( $pass1 ) && !empty ( $pass2 ) ) || (empty ( $pass2 ) && !empty ( $pass1 ) ) )
			$errors->add( 'pass', __( "<strong>ERROR</strong>: you typed your new password only once." ));
	}

	/* Check for "\" in password */
	if( strpos( " ".$pass1, "\\" ) )
		$errors->add( 'pass', __( '<strong>ERROR</strong>: Passwords may not contain the character "\\".' ));

	/* checking the password has been typed twice the same */
	if ( $pass1 != $pass2 )
		$errors->add( 'pass', __( '<strong>ERROR</strong>: Please type the same password in the two password fields.' ));

	if (!empty ( $pass1 ))
		$user->user_pass = $pass1;

	if ( !$update && !validate_username( $user->user_login ) )
		$errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is invalid.  Please enter a valid username.' ));

	if (!$update && username_exists( $user->user_login ))
		$errors->add( 'user_login', __( '<strong>ERROR</strong>: This username is already registered, please choose another one.' ));

	/* checking e-mail address */
	if ( empty ( $user->user_email ) ) {
		$errors->add( 'user_email', __( "<strong>ERROR</strong>: please type an e-mail address" ));
	} else
		if (!is_email( $user->user_email ) ) {
			$errors->add( 'user_email', __( "<strong>ERROR</strong>: the email address isn't correct" ));
		}

	if ( $errors->get_error_codes() )
		return $errors;

	if ( $update ) {
		$user_id = wp_update_user( get_object_vars( $user ));
	} else {
		$user_id = wp_insert_user( get_object_vars( $user ));
		wp_new_user_notification( $user_id );
	}
	return $user_id;
}


function get_link_to_edit( $link_id ) {
	$link = get_link( $link_id );

	$link->link_url         = clean_url($link->link_url);
	$link->link_name        = attribute_escape($link->link_name);
	$link->link_image       = attribute_escape($link->link_image);
	$link->link_description = attribute_escape($link->link_description);
	$link->link_rss         = clean_url($link->link_rss);
	$link->link_rel         = attribute_escape($link->link_rel);
	$link->link_notes       =  wp_specialchars($link->link_notes);
	$link->post_category    = $link->link_category;

	return $link;
}

function get_default_link_to_edit() {
	if ( isset( $_GET['linkurl'] ) )
		$link->link_url = clean_url( $_GET['linkurl']);
	else
		$link->link_url = '';

	if ( isset( $_GET['name'] ) )
		$link->link_name = attribute_escape( $_GET['name']);
	else
		$link->link_name = '';

	$link->link_visible = 'Y';

	return $link;
}

function add_link() {
	return edit_link();
}

function edit_link( $link_id = '' ) {
	if (!current_user_can( 'manage_links' ))
		wp_die( __( 'Cheatin&#8217; uh?' ));

	$_POST['link_url'] = wp_specialchars( $_POST['link_url'] );
	$_POST['link_url'] = clean_url($_POST['link_url']);
	$_POST['link_name'] = wp_specialchars( $_POST['link_name'] );
	$_POST['link_image'] = wp_specialchars( $_POST['link_image'] );
	$_POST['link_rss'] = clean_url($_POST['link_rss']);
	$_POST['link_category'] = $_POST['post_category'];

	if ( !empty( $link_id ) ) {
		$_POST['link_id'] = $link_id;
		return wp_update_link( $_POST);
	} else {
		return wp_insert_link( $_POST);
	}
}

function url_shorten( $url ) {
	$short_url = str_replace( 'http://', '', stripslashes( $url ));
	$short_url = str_replace( 'www.', '', $short_url );
	if ('/' == substr( $short_url, -1 ))
		$short_url = substr( $short_url, 0, -1 );
	if ( strlen( $short_url ) > 35 )
		$short_url = substr( $short_url, 0, 32 ).'...';
	return $short_url;
}

function selected( $selected, $current) {
	if ( $selected == $current)
		echo ' selected="selected"';
}

function checked( $checked, $current) {
	if ( $checked == $current)
		echo ' checked="checked"';
}

function return_categories_list( $parent = 0 ) {
	global $wpdb;
	return $wpdb->get_col( "SELECT cat_ID FROM $wpdb->categories WHERE category_parent = $parent AND ( link_count = 0 OR category_count != 0 OR ( link_count = 0 AND category_count = 0 ) ) ORDER BY category_count DESC" );
}

function sort_cats( $cat1, $cat2 ) {
	if ( $cat1['checked'] || $cat2['checked'] )
		return ( $cat1['checked'] && !$cat2['checked'] ) ? -1 : 1;
	else
		return strcasecmp( $cat1['cat_name'], $cat2['cat_name'] );
}

function get_nested_categories( $default = 0, $parent = 0 ) {
	global $post_ID, $link_id, $mode, $wpdb;

	if ( $post_ID ) {
		$checked_categories = $wpdb->get_col( "
		     SELECT category_id
		     FROM $wpdb->categories, $wpdb->post2cat
		     WHERE $wpdb->post2cat.category_id = cat_ID AND $wpdb->post2cat.post_id = '$post_ID'
		     " );

		if ( count( $checked_categories ) == 0 ) {
			// No selected categories, strange
			$checked_categories[] = $default;
		}
	} else if ( $link_id ) {
		$checked_categories = $wpdb->get_col( "
		     SELECT category_id
		     FROM $wpdb->categories, $wpdb->link2cat
		     WHERE $wpdb->link2cat.category_id = cat_ID AND $wpdb->link2cat.link_id = '$link_id'
		     " );

		if ( count( $checked_categories ) == 0 ) {
			// No selected categories, strange
			$checked_categories[] = $default;
		}
	} else {
		$checked_categories[] = $default;
	}

	$cats = return_categories_list( $parent);
	$result = array ();

	if ( is_array( $cats ) ) {
		foreach ( $cats as $cat) {
			$result[$cat]['children'] = get_nested_categories( $default, $cat);
			$result[$cat]['cat_ID'] = $cat;
			$result[$cat]['checked'] = in_array( $cat, $checked_categories );
			$result[$cat]['cat_name'] = get_the_category_by_ID( $cat);
		}
	}

	usort( $result, 'sort_cats' );

	return $result;
}

function write_nested_categories( $categories ) {
	foreach ( $categories as $category ) {
		echo '<li id="category-', $category['cat_ID'], '"><label for="in-category-', $category['cat_ID'], '" class="selectit"><input value="', $category['cat_ID'], '" type="checkbox" name="post_category[]" id="in-category-', $category['cat_ID'], '"', ($category['checked'] ? ' checked="checked"' : "" ), '/> ', wp_specialchars( apply_filters('the_category', $category['cat_name'] )), "</label></li>";

		if ( $category['children'] ) {
			echo "<ul>\n";
			write_nested_categories( $category['children'] );
			echo "</ul>\n";
		}
	}
}

function dropdown_categories( $default = 0 ) {
	write_nested_categories( get_nested_categories( $default) );
}

function return_link_categories_list( $parent = 0 ) {
	global $wpdb;
	return $wpdb->get_col( "SELECT cat_ID FROM $wpdb->categories WHERE category_parent = $parent AND ( category_count = 0  OR link_count != 0 OR ( link_count = 0 AND category_count = 0 ) ) ORDER BY link_count DESC" );
}

function get_nested_link_categories( $default = 0, $parent = 0 ) {
	global $post_ID, $link_id, $mode, $wpdb;

	if ( $link_id ) {
		$checked_categories = $wpdb->get_col( "
		     SELECT category_id
		     FROM $wpdb->categories, $wpdb->link2cat
		     WHERE $wpdb->link2cat.category_id = cat_ID AND $wpdb->link2cat.link_id = '$link_id'
		     " );

		if ( count( $checked_categories ) == 0 ) {
			// No selected categories, strange
			$checked_categories[] = $default;
		}
	} else {
		$checked_categories[] = $default;
	}

	$cats = return_link_categories_list( $parent);
	$result = array ();

	if ( is_array( $cats ) ) {
		foreach ( $cats as $cat) {
			$result[$cat]['children'] = get_nested_link_categories( $default, $cat);
			$result[$cat]['cat_ID'] = $cat;
			$result[$cat]['checked'] = in_array( $cat, $checked_categories );
			$result[$cat]['cat_name'] = get_the_category_by_ID( $cat);
		}
	}

	usort( $result, 'sort_cats' );

	return $result;
}

function dropdown_link_categories( $default = 0 ) {
	write_nested_categories( get_nested_link_categories( $default) );
}

// Dandy new recursive multiple category stuff.
function cat_rows( $parent = 0, $level = 0, $categories = 0 ) {
	if (!$categories )
		$categories = get_categories( 'hide_empty=0' );

	$children = _get_category_hierarchy();

	if ( $categories ) {
		ob_start();
		foreach ( $categories as $category ) {
			if ( $category->category_parent == $parent) {
				echo "\t" . _cat_row( $category, $level );
				if ( isset($children[$category->cat_ID]) )
					cat_rows( $category->cat_ID, $level +1, $categories );
			}
		}
		$output = ob_get_contents();
		ob_end_clean();

		$output = apply_filters('cat_rows', $output);

		echo $output;
	} else {
		return false;
	}
}

function _cat_row( $category, $level, $name_override = false ) {
	global $class;

	$pad = str_repeat( '&#8212; ', $level );
	if ( current_user_can( 'manage_categories' ) ) {
		$edit = "<a href='categories.php?action=edit&amp;cat_ID=$category->cat_ID' class='edit'>".__( 'Edit' )."</a></td>";
		$default_cat_id = (int) get_option( 'default_category' );
		$default_link_cat_id = (int) get_option( 'default_link_category' );

		if ( ($category->cat_ID != $default_cat_id ) && ($category->cat_ID != $default_link_cat_id ) )
			$edit .= "<td><a href='" . wp_nonce_url( "categories.php?action=delete&amp;cat_ID=$category->cat_ID", 'delete-category_' . $category->cat_ID ) . "' onclick=\"return deleteSomething( 'cat', $category->cat_ID, '" . js_escape(sprintf( __("You are about to delete the category '%s'.\nAll posts that were only assigned to this category will be assigned to the '%s' category.\nAll links that were only assigned to this category will be assigned to the '%s' category.\n'OK' to delete, 'Cancel' to stop." ), $category->cat_name, get_catname( $default_cat_id ), get_catname( $default_link_cat_id ) )) . "' );\" class='delete'>".__( 'Delete' )."</a>";
		else
			$edit .= "<td style='text-align:center'>".__( "Default" );
	} else
		$edit = '';

	$class = ( ( defined( 'DOING_AJAX' ) && DOING_AJAX ) || " class='alternate'" == $class ) ? '' : " class='alternate'";

	$category->category_count = number_format( $category->category_count );
	$category->link_count = number_format( $category->link_count );
	$posts_count = ( $category->category_count > 0 ) ? "<a href='edit.php?cat=$category->cat_ID'>$category->category_count</a>" : $category->category_count;
	return "<tr id='cat-$category->cat_ID'$class>
		<th scope='row' style='text-align: center'>$category->cat_ID</th>
		<td>" . ( $name_override ? $name_override : $pad . ' ' . $category->cat_name ) . "</td>
		<td>$category->category_description</td>
		<td align='center'>$posts_count</td>
		<td align='center'>$category->link_count</td>
		<td>$edit</td>\n\t</tr>\n";
}

function page_rows( $parent = 0, $level = 0, $pages = 0, $hierarchy = true ) {
	global $wpdb, $class, $post;

	if (!$pages )
		$pages = get_pages( 'sort_column=menu_order' );

	if (! $pages )
		return false;

	foreach ( $pages as $post) {
		setup_postdata( $post);
		if ( $hierarchy && ($post->post_parent != $parent) )
			continue;

		$post->post_title = wp_specialchars( $post->post_title );
		$pad = str_repeat( '&#8212; ', $level );
		$id = (int) $post->ID;
		$class = ('alternate' == $class ) ? '' : 'alternate';
?>
  <tr id='page-<?php echo $id; ?>' class='<?php echo $class; ?>'> 
    <th scope="row" style="text-align: center"><?php echo $post->ID; ?></th> 
    <td>
      <?php echo $pad; ?><?php the_title() ?>
    </td> 
    <td><?php the_author() ?></td>
    <td><?php if ( '0000-00-00 00:00:00' ==$post->post_modified ) _e('Unpublished'); else echo mysql2date( __('Y-m-d g:i a'), $post->post_modified ); ?></td> 
	<td><a href="<?php the_permalink(); ?>" rel="permalink" class="edit"><?php _e( 'View' ); ?></a></td>
    <td><?php if ( current_user_can( 'edit_page', $id ) ) { echo "<a href='page.php?action=edit&amp;post=$id' class='edit'>" . __( 'Edit' ) . "</a>"; } ?></td> 
    <td><?php if ( current_user_can( 'delete_page', $id ) ) { echo "<a href='" . wp_nonce_url( "page.php?action=delete&amp;post=$id", 'delete-page_' . $id ) .  "' class='delete' onclick=\"return deleteSomething( 'page', " . $id . ", '" . js_escape(sprintf( __("You are about to delete the '%s' page.\n'OK' to delete, 'Cancel' to stop." ), get_the_title() ) ) . "' );\">" . __( 'Delete' ) . "</a>"; } ?></td> 
  </tr> 

<?php
		if ( $hierarchy ) page_rows( $id, $level + 1, $pages );
	}
}

function user_row( $user_object, $style = '' ) {
	if ( !(is_object( $user_object) && is_a( $user_object, 'WP_User' ) ) )
		$user_object = new WP_User( (int) $user_object );
	$email = $user_object->user_email;
	$url = $user_object->user_url;
	$short_url = str_replace( 'http://', '', $url );
	$short_url = str_replace( 'www.', '', $short_url );
	if ('/' == substr( $short_url, -1 ))
		$short_url = substr( $short_url, 0, -1 );
	if ( strlen( $short_url ) > 35 )
		$short_url =  substr( $short_url, 0, 32 ).'...';
	$numposts = get_usernumposts( $user_object->ID );
	$r = "<tr id='user-$user_object->ID'$style>
		<td><input type='checkbox' name='users[]' id='user_{$user_object->ID}' value='{$user_object->ID}' /> <label for='user_{$user_object->ID}'>{$user_object->ID}</label></td>
		<td><label for='user_{$user_object->ID}'><strong>$user_object->user_login</strong></label></td>
		<td><label for='user_{$user_object->ID}'>$user_object->first_name $user_object->last_name</label></td>
		<td><a href='mailto:$email' title='" . sprintf( __('e-mail: %s' ), $email ) . "'>$email</a></td>
		<td><a href='$url' title='website: $url'>$short_url</a></td>";
	$r .= "\n\t\t<td align='center'>";
	if ( $numposts > 0 ) {
		$r .= "<a href='edit.php?author=$user_object->ID' title='" . __( 'View posts by this author' ) . "' class='edit'>";
		$r .= sprintf(__ngettext( 'View %s post', 'View %s posts', $numposts ), $numposts);
		$r .= '</a>';
	}
	$r .= "</td>\n\t\t<td>";
	if ( current_user_can( 'edit_user', $user_object->ID ) ) {
		$edit_link = add_query_arg( 'wp_http_referer', urlencode( clean_url( stripslashes( $_SERVER['REQUEST_URI'] ) ) ), "user-edit.php?user_id=$user_object->ID" );
		$r .= "<a href='$edit_link' class='edit'>".__( 'Edit' )."</a>";
	}
	$r .= "</td>\n\t</tr>";
	return $r;
}

function _wp_get_comment_list( $s = false, $start, $num ) {
	global $wpdb;

	$start = (int) $start;
	$num = (int) $num;

	if ( $s ) {
		$s = $wpdb->escape($s);
		$comments = $wpdb->get_results("SELECT SQL_CALC_FOUND_ROWS * FROM $wpdb->comments WHERE
			(comment_author LIKE '%$s%' OR
			comment_author_email LIKE '%$s%' OR
			comment_author_url LIKE ('%$s%') OR
			comment_author_IP LIKE ('%$s%') OR
			comment_content LIKE ('%$s%') ) AND
			comment_approved != 'spam'
			ORDER BY comment_date DESC LIMIT $start, $num");
	} else {
		$comments = $wpdb->get_results( "SELECT SQL_CALC_FOUND_ROWS * FROM $wpdb->comments WHERE comment_approved = '0' OR comment_approved = '1' ORDER BY comment_date DESC LIMIT $start, $num" );
	}

	$total = $wpdb->get_var( "SELECT FOUND_ROWS()" );

	return array($comments, $total);
}

function _wp_comment_list_item( $id, $alt = 0 ) {
	global $authordata, $comment, $wpdb;
	$id = (int) $id;
	$comment =& get_comment( $id );
	$class = '';
	$authordata = get_userdata($wpdb->get_var("SELECT post_author FROM $wpdb->posts WHERE ID = $comment->comment_post_ID"));
	$comment_status = wp_get_comment_status($comment->comment_ID);
	if ( 'unapproved' == $comment_status )
		$class .= ' unapproved';
	if ( $alt % 2 )
		$class .= ' alternate';
	echo "<li id='comment-$comment->comment_ID' class='$class'>";
?>
<p><strong><?php comment_author(); ?></strong> <?php if ($comment->comment_author_email) { ?>| <?php comment_author_email_link() ?> <?php } if ($comment->comment_author_url && 'http://' != $comment->comment_author_url) { ?> | <?php comment_author_url_link() ?> <?php } ?>| <?php _e('IP:') ?> <a href="http://ws.arin.net/cgi-bin/whois.pl?queryinput=<?php comment_author_IP() ?>"><?php comment_author_IP() ?></a></p>

<?php comment_text() ?>

<p><?php comment_date(__('M j, g:i A'));  ?> &#8212; [
<?php
if ( current_user_can('edit_post', $comment->comment_post_ID) ) {
	echo " <a href='comment.php?action=editcomment&amp;c=".$comment->comment_ID."'>" .  __('Edit') . '</a>';
	echo ' | <a href="' . wp_nonce_url('ocomment.php?action=deletecomment&amp;p=' . $comment->comment_post_ID . '&amp;c=' . $comment->comment_ID, 'delete-comment_' . $comment->comment_ID) . '" onclick="return deleteSomething( \'comment\', ' . $comment->comment_ID . ', \'' . js_escape(sprintf(__("You are about to delete this comment by '%s'.\n'Cancel' to stop, 'OK' to delete."), $comment->comment_author)) . "', theCommentList );\">" . __('Delete') . '</a> ';
	if ( ('none' != $comment_status) && ( current_user_can('moderate_comments') ) ) {
		echo '<span class="unapprove"> | <a href="' . wp_nonce_url('comment.php?action=unapprovecomment&amp;p=' . $comment->comment_post_ID . '&amp;c=' . $comment->comment_ID, 'unapprove-comment_' . $comment->comment_ID) . '" onclick="return dimSomething( \'comment\', ' . $comment->comment_ID . ', \'unapproved\', theCommentList );">' . __('Unapprove') . '</a> </span>';
		echo '<span class="approve"> | <a href="' . wp_nonce_url('comment.php?action=approvecomment&amp;p=' . $comment->comment_post_ID . '&amp;c=' . $comment->comment_ID, 'approve-comment_' . $comment->comment_ID) . '" onclick="return dimSomething( \'comment\', ' . $comment->comment_ID . ', \'unapproved\', theCommentList );">' . __('Approve') . '</a> </span>';
	}
	echo " | <a href=\"" . wp_nonce_url("comment.php?action=deletecomment&amp;dt=spam&amp;p=" . $comment->comment_post_ID . "&amp;c=" . $comment->comment_ID, 'delete-comment_' . $comment->comment_ID) . "\" onclick=\"return deleteSomething( 'comment-as-spam', $comment->comment_ID, '" . js_escape(sprintf(__("You are about to mark as spam this comment by '%s'.\n'Cancel' to stop, 'OK' to mark as spam."), $comment->comment_author))  . "', theCommentList );\">" . __('Spam') . "</a> ";
}
$post = get_post($comment->comment_post_ID);
$post_title = wp_specialchars( $post->post_title, 'double' );
$post_title = ('' == $post_title) ? "# $comment->comment_post_ID" : $post_title;
?>
 ] &#8212; <a href="<?php echo get_permalink($comment->comment_post_ID); ?>"><?php echo $post_title; ?></a></p>
		</li>
<?php
}

function wp_dropdown_cats( $currentcat = 0, $currentparent = 0, $parent = 0, $level = 0, $categories = 0 ) {
	global $wpdb;
	if (!$categories )
		$categories = get_categories( 'hide_empty=0' );

	if ( $categories ) {
		foreach ( $categories as $category ) {
			if ( $currentcat != $category->cat_ID && $parent == $category->category_parent) {
				$pad = str_repeat( '&#8211; ', $level );
				$category->cat_name = wp_specialchars( $category->cat_name );
				echo "\n\t<option value='$category->cat_ID'";
				if ( $currentparent == $category->cat_ID )
					echo " selected='selected'";
				echo ">$pad$category->cat_name</option>";
				wp_dropdown_cats( $currentcat, $currentparent, $category->cat_ID, $level +1, $categories );
			}
		}
	} else {
		return false;
	}
}

// Some postmeta stuff
function has_meta( $postid ) {
	global $wpdb;

	return $wpdb->get_results( "
			SELECT meta_key, meta_value, meta_id, post_id
			FROM $wpdb->postmeta
			WHERE post_id = '$postid'
			ORDER BY meta_key,meta_id", ARRAY_A );

}

function list_meta( $meta ) {
	global $post_ID;
	// Exit if no meta
	if (!$meta ) {
		echo '<tbody id="the-list"><tr style="display: none;"><td>&nbsp;</td></tr></tbody>'; //TBODY needed for list-manipulation JS
		return;
	}
	$count = 0;
?>
	<thead>
	<tr>
		<th><?php _e( 'Key' ) ?></th>
		<th><?php _e( 'Value' ) ?></th>
		<th colspan='2'><?php _e( 'Action' ) ?></th>
	</tr>
	</thead>
<?php
	$r ="\n\t<tbody id='the-list'>";
	foreach ( $meta as $entry ) {
		++ $count;
		if ( $count % 2 )
			$style = 'alternate';
		else
			$style = '';
		if ('_' == $entry['meta_key'] { 0 } )
			$style .= ' hidden';

		if ( is_serialized( $entry['meta_value'] ) ) {
			if ( is_serialized_string( $entry['meta_value'] ) ) {
				// this is a serialized string, so we should display it
				$entry['meta_value'] = maybe_unserialize( $entry['meta_value'] );
			} else {
				// this is a serialized array/object so we should NOT display it
				--$count;
				continue;
			}
		}

		$key_js = js_escape( $entry['meta_key'] );
		$entry['meta_key']   = attribute_escape($entry['meta_key']);
		$entry['meta_value'] = attribute_escape($entry['meta_value']);
		$r .= "\n\t<tr id='meta-{$entry['meta_id']}' class='$style'>";
		$r .= "\n\t\t<td valign='top'><input name='meta[{$entry['meta_id']}][key]' tabindex='6' type='text' size='20' value='{$entry['meta_key']}' /></td>";
		$r .= "\n\t\t<td><textarea name='meta[{$entry['meta_id']}][value]' tabindex='6' rows='2' cols='30'>{$entry['meta_value']}</textarea></td>";
		$r .= "\n\t\t<td align='center'><input name='updatemeta' type='submit' class='updatemeta' tabindex='6' value='".attribute_escape(__( 'Update' ))."' /><br />";
		$r .= "\n\t\t<input name='deletemeta[{$entry['meta_id']}]' type='submit' onclick=\"return deleteSomething( 'meta', {$entry['meta_id']}, '";
		$r .= js_escape(sprintf( __("You are about to delete the '%s' custom field on this post.\n'OK' to delete, 'Cancel' to stop." ), $key_js ) );
		$r .= "' );\" class='deletemeta' tabindex='6' value='".attribute_escape(__( 'Delete' ))."' /></td>";
		$r .= "\n\t</tr>";
	}
	echo $r;
	echo "\n\t</tbody>";
}

// Get a list of previously defined keys
function get_meta_keys() {
	global $wpdb;

	$keys = $wpdb->get_col( "
			SELECT meta_key
			FROM $wpdb->postmeta
			GROUP BY meta_key
			ORDER BY meta_key" );

	return $keys;
}

function meta_form() {
	global $wpdb;
	$limit = (int) apply_filters( 'postmeta_form_limit', 30 );
	$keys = $wpdb->get_col( "
		SELECT meta_key
		FROM $wpdb->postmeta
		GROUP BY meta_key
		ORDER BY meta_id DESC
		LIMIT $limit" );
	if ( $keys )
		natcasesort($keys);
?>
<h3><?php _e( 'Add a new custom field:' ) ?></h3>
<table id="newmeta" cellspacing="3" cellpadding="3">
	<tr>
<th colspan="2"><?php _e( 'Key' ) ?></th>
<th><?php _e( 'Value' ) ?></th>
</tr>
	<tr valign="top">
		<td align="right" width="18%">
<?php if ( $keys ) : ?>
<select id="metakeyselect" name="metakeyselect" tabindex="7">
<option value="#NONE#"><?php _e( '- Select -' ); ?></option>
<?php

	foreach ( $keys as $key ) {
		$key = attribute_escape( $key);
		echo "\n\t<option value='$key'>$key</option>";
	}
?>
</select> <?php _e( 'or' ); ?>
<?php endif; ?>
</td>
<td><input type="text" id="metakeyinput" name="metakeyinput" tabindex="7" /></td>
		<td><textarea id="metavalue" name="metavalue" rows="3" cols="25" tabindex="8"></textarea></td>
	</tr>

</table>
<p class="submit"><input type="submit" id="updatemetasub" name="updatemeta" tabindex="9" value="<?php _e( 'Add Custom Field &raquo;' ) ?>" /></p>
<?php

}

function add_meta( $post_ID ) {
	global $wpdb;
	$post_ID = (int) $post_ID;

	$metakeyselect = $wpdb->escape( stripslashes( trim( $_POST['metakeyselect'] ) ) );
	$metakeyinput = $wpdb->escape( stripslashes( trim( $_POST['metakeyinput'] ) ) );
	$metavalue = maybe_serialize( stripslashes( (trim( $_POST['metavalue'] ) ) ));
	$metavalue = $wpdb->escape( $metavalue );

	if ( ('0' === $metavalue || !empty ( $metavalue ) ) && ((('#NONE#' != $metakeyselect) && !empty ( $metakeyselect) ) || !empty ( $metakeyinput) ) ) {
		// We have a key/value pair. If both the select and the 
		// input for the key have data, the input takes precedence:

 		if ('#NONE#' != $metakeyselect)
			$metakey = $metakeyselect;

		if ( $metakeyinput)
			$metakey = $metakeyinput; // default

		$result = $wpdb->query( "
						INSERT INTO $wpdb->postmeta 
						(post_id,meta_key,meta_value ) 
						VALUES ('$post_ID','$metakey','$metavalue' )
					" );
		return $wpdb->insert_id;
	}
	return false;
} // add_meta

function delete_meta( $mid ) {
	global $wpdb;
	$mid = (int) $mid;

	return $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_id = '$mid'" );
}

function update_meta( $mid, $mkey, $mvalue ) {
	global $wpdb;
	$mvalue = maybe_serialize( stripslashes( $mvalue ));
	$mvalue = $wpdb->escape( $mvalue );
	$mid = (int) $mid;
	return $wpdb->query( "UPDATE $wpdb->postmeta SET meta_key = '$mkey', meta_value = '$mvalue' WHERE meta_id = '$mid'" );
}

function get_post_meta_by_id( $mid ) {
	global $wpdb;
	$mid = (int) $mid;

	$meta = $wpdb->get_row( "SELECT * FROM $wpdb->postmeta WHERE meta_id = '$mid'" );
	if ( is_serialized_string( $meta->meta_value ) )
		$meta->meta_value = maybe_unserialize( $meta->meta_value );
	return $meta;
}

function touch_time( $edit = 1, $for_post = 1 ) {
	global $wp_locale, $post, $comment;

	if ( $for_post )
		$edit = ( ('draft' == $post->post_status ) && (!$post->post_date || '0000-00-00 00:00:00' == $post->post_date ) ) ? false : true;
 
	echo '<fieldset><legend><input type="checkbox" class="checkbox" name="edit_date" value="1" id="timestamp" /> <label for="timestamp">'.__( 'Edit timestamp' ).'</label></legend>';

	$time_adj = time() + (get_option( 'gmt_offset' ) * 3600 );
	$post_date = ($for_post) ? $post->post_date : $comment->comment_date;
	$jj = ($edit) ? mysql2date( 'd', $post_date ) : gmdate( 'd', $time_adj );
	$mm = ($edit) ? mysql2date( 'm', $post_date ) : gmdate( 'm', $time_adj );
	$aa = ($edit) ? mysql2date( 'Y', $post_date ) : gmdate( 'Y', $time_adj );
	$hh = ($edit) ? mysql2date( 'H', $post_date ) : gmdate( 'H', $time_adj );
	$mn = ($edit) ? mysql2date( 'i', $post_date ) : gmdate( 'i', $time_adj );
	$ss = ($edit) ? mysql2date( 's', $post_date ) : gmdate( 's', $time_adj );

	echo "<select name=\"mm\" onchange=\"edit_date.checked=true\">\n";
	for ( $i = 1; $i < 13; $i = $i +1 ) {
		echo "\t\t\t<option value=\"$i\"";
		if ( $i == $mm )
			echo ' selected="selected"';
		echo '>' . $wp_locale->get_month( $i ) . "</option>\n";
	}
?>
</select>
<input type="text" id="jj" name="jj" value="<?php echo $jj; ?>" size="2" maxlength="2" onchange="edit_date.checked=true"/>
<input type="text" id="aa" name="aa" value="<?php echo $aa ?>" size="4" maxlength="5" onchange="edit_date.checked=true" /> @
<input type="text" id="hh" name="hh" value="<?php echo $hh ?>" size="2" maxlength="2" onchange="edit_date.checked=true" /> :
<input type="text" id="mn" name="mn" value="<?php echo $mn ?>" size="2" maxlength="2" onchange="edit_date.checked=true" />
<input type="hidden" id="ss" name="ss" value="<?php echo $ss ?>" size="2" maxlength="2" onchange="edit_date.checked=true" />
<?php
	if ( $edit ) {
		printf( __('Existing timestamp: %1$s %2$s, %3$s @ %4$s:%5$s' ), $wp_locale->get_month( $mm ), $jj, $aa, $hh, $mn );
	}
?>
</fieldset>
	<?php

}

// insert_with_markers: Owen Winkler, fixed by Eric Anderson
// Inserts an array of strings into a file (.htaccess ), placing it between
// BEGIN and END markers.  Replaces existing marked info.  Retains surrounding
// data.  Creates file if none exists.
// Returns true on write success, false on failure.
function insert_with_markers( $filename, $marker, $insertion ) {
	if (!file_exists( $filename ) || is_writeable( $filename ) ) {
		if (!file_exists( $filename ) ) {
			$markerdata = '';
		} else {
			$markerdata = explode( "\n", implode( '', file( $filename ) ) );
		}

		$f = fopen( $filename, 'w' );
		$foundit = false;
		if ( $markerdata ) {
			$state = true;
			foreach ( $markerdata as $n => $markerline ) {
				if (strpos($markerline, '# BEGIN ' . $marker) !== false)
					$state = false;
				if ( $state ) {
					if ( $n + 1 < count( $markerdata ) )
						fwrite( $f, "{$markerline}\n" );
					else
						fwrite( $f, "{$markerline}" );
				}
				if (strpos($markerline, '# END ' . $marker) !== false) {
					fwrite( $f, "# BEGIN {$marker}\n" );
					if ( is_array( $insertion ))
						foreach ( $insertion as $insertline )
							fwrite( $f, "{$insertline}\n" );
					fwrite( $f, "# END {$marker}\n" );
					$state = true;
					$foundit = true;
				}
			}
		}
		if (!$foundit) {
			fwrite( $f, "# BEGIN {$marker}\n" );
			foreach ( $insertion as $insertline )
				fwrite( $f, "{$insertline}\n" );
			fwrite( $f, "# END {$marker}\n" );
		}
		fclose( $f );
		return true;
	} else {
		return false;
	}
}

// extract_from_markers: Owen Winkler
// Returns an array of strings from a file (.htaccess ) from between BEGIN
// and END markers.
function extract_from_markers( $filename, $marker ) {
	$result = array ();

	if (!file_exists( $filename ) ) {
		return $result;
	}

	if ( $markerdata = explode( "\n", implode( '', file( $filename ) ) ));
	{
		$state = false;
		foreach ( $markerdata as $markerline ) {
			if (strpos($markerline, '# END ' . $marker) !== false)
				$state = false;
			if ( $state )
				$result[] = $markerline;
			if (strpos($markerline, '# BEGIN ' . $marker) !== false)
				$state = true;
		}
	}

	return $result;
}

function got_mod_rewrite() {
	global $is_apache;

	// take 3 educated guesses as to whether or not mod_rewrite is available
	if ( !$is_apache )
		return false;

	if ( function_exists( 'apache_get_modules' ) ) {
		if ( !in_array( 'mod_rewrite', apache_get_modules() ) )
			return false;
	}

	return true;
}

function save_mod_rewrite_rules() {
	global $is_apache, $wp_rewrite;
	$home_path = get_home_path();

	if (!$wp_rewrite->using_mod_rewrite_permalinks() )
		return false;

	if (!((!file_exists( $home_path.'.htaccess' ) && is_writable( $home_path ) ) || is_writable( $home_path.'.htaccess' ) ) )
		return false;

	if (! got_mod_rewrite() )
		return false;

	$rules = explode( "\n", $wp_rewrite->mod_rewrite_rules() );
	return insert_with_markers( $home_path.'.htaccess', 'WordPress', $rules );
}

function get_broken_themes() {
	global $wp_broken_themes;

	get_themes();
	return $wp_broken_themes;
}

function get_page_templates() {
	$themes = get_themes();
	$theme = get_current_theme();
	$templates = $themes[$theme]['Template Files'];
	$page_templates = array ();

	if ( is_array( $templates ) ) {
		foreach ( $templates as $template ) {
			$template_data = implode( '', file( ABSPATH.$template ));
			preg_match( "|Template Name:(.*)|i", $template_data, $name );
			preg_match( "|Description:(.*)|i", $template_data, $description );

			$name = $name[1];
			$description = $description[1];

			if (!empty ( $name ) ) {
				$page_templates[trim( $name )] = basename( $template );
			}
		}
	}

	return $page_templates;
}

function page_template_dropdown( $default = '' ) {
	$templates = get_page_templates();
	foreach (array_keys( $templates ) as $template )
		: if ( $default == $templates[$template] )
			$selected = " selected='selected'";
		else
			$selected = '';
	echo "\n\t<option value='".$templates[$template]."' $selected>$template</option>";
	endforeach;
}

function parent_dropdown( $default = 0, $parent = 0, $level = 0 ) {
	global $wpdb, $post_ID;
	$items = $wpdb->get_results( "SELECT ID, post_parent, post_title FROM $wpdb->posts WHERE post_parent = $parent AND post_type = 'page' ORDER BY menu_order" );

	if ( $items ) {
		foreach ( $items as $item ) {
			// A page cannot be its own parent.
			if (!empty ( $post_ID ) ) {
				if ( $item->ID == $post_ID ) {
					continue;
				}
			}
			$pad = str_repeat( '&nbsp;', $level * 3 );
			if ( $item->ID == $default)
				$current = ' selected="selected"';
			else
				$current = '';

			echo "\n\t<option value='$item->ID'$current>$pad $item->post_title</option>";
			parent_dropdown( $default, $item->ID, $level +1 );
		}
	} else {
		return false;
	}
}

function user_can_access_admin_page() {
	global $pagenow;
	global $menu;
	global $submenu;
	global $_wp_menu_nopriv;
	global $_wp_submenu_nopriv;
	global $plugin_page;

	$parent = get_admin_page_parent();

	if ( isset( $_wp_submenu_nopriv[$parent][$pagenow] ) )
		return false;

	if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$parent][$plugin_page] ) )
		return false;

	if ( empty( $parent) ) {
		if ( isset( $_wp_menu_nopriv[$pagenow] ) )
			return false;
		if ( isset( $_wp_submenu_nopriv[$pagenow][$pagenow] ) )
			return false;
		if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$pagenow][$plugin_page] ) )
			return false;
		foreach (array_keys( $_wp_submenu_nopriv ) as $key ) {
			if ( isset( $_wp_submenu_nopriv[$key][$pagenow] ) )
				return false;
			if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$key][$plugin_page] ) )
			return false;
		}
		return true;
	}

	if ( isset( $submenu[$parent] ) ) {
		foreach ( $submenu[$parent] as $submenu_array ) {
			if ( isset( $plugin_page ) && ( $submenu_array[2] == $plugin_page ) ) {
				if ( current_user_can( $submenu_array[1] ))
					return true;
				else
					return false;
			} else if ( $submenu_array[2] == $pagenow ) {
				if ( current_user_can( $submenu_array[1] ))
					return true;
				else
					return false;
			}
		}
	}

	foreach ( $menu as $menu_array ) {
		if ( $menu_array[2] == $parent) {
			if ( current_user_can( $menu_array[1] ))
				return true;
			else
				return false;
		}
	}

	return true;
}

function get_admin_page_title() {
	global $title;
	global $menu;
	global $submenu;
	global $pagenow;
	global $plugin_page;

	if ( isset( $title ) && !empty ( $title ) ) {
		return $title;
	}

	$hook = get_plugin_page_hook( $plugin_page, $pagenow );

	$parent = $parent1 = get_admin_page_parent();
	if ( empty ( $parent) ) {
		foreach ( $menu as $menu_array ) {
			if ( isset( $menu_array[3] ) ) {
				if ( $menu_array[2] == $pagenow ) {
					$title = $menu_array[3];
					return $menu_array[3];
				} else
					if ( isset( $plugin_page ) && ($plugin_page == $menu_array[2] ) && ($hook == $menu_array[3] ) ) {
						$title = $menu_array[3];
						return $menu_array[3];
					}
			} else {
				$title = $menu_array[0];
				return $title;
			}
		}
	} else {
		foreach (array_keys( $submenu ) as $parent) {
			foreach ( $submenu[$parent] as $submenu_array ) {
				if ( isset( $plugin_page ) && 
					($plugin_page == $submenu_array[2] ) && 
					(($parent == $pagenow ) || ($parent == $plugin_page ) || ($plugin_page == $hook ) || (($pagenow == 'admin.php' ) && ($parent1 != $submenu_array[2] ) ) )
					) {
						$title = $submenu_array[3];
						return $submenu_array[3];
					}

				if ( $submenu_array[2] != $pagenow || isset( $_GET['page'] ) ) // not the current page
					continue;

				if ( isset( $submenu_array[3] ) ) {
					$title = $submenu_array[3];
					return $submenu_array[3];
				} else {
					$title = $submenu_array[0];
					return $title;
				}
			}
		}
	}

	return $title;
}

function get_admin_page_parent() {
	global $parent_file;
	global $menu;
	global $submenu;
	global $pagenow;
	global $plugin_page;
	global $_wp_real_parent_file;
	global $_wp_menu_nopriv;
	global $_wp_submenu_nopriv;

	if ( !empty ( $parent_file ) ) {
		if ( isset( $_wp_real_parent_file[$parent_file] ) )
			$parent_file = $_wp_real_parent_file[$parent_file];

		return $parent_file;
	}

	if ( $pagenow == 'admin.php' && isset( $plugin_page ) ) {
		foreach ( $menu as $parent_menu ) {
			if ( $parent_menu[2] == $plugin_page ) {
				$parent_file = $plugin_page;
				if ( isset( $_wp_real_parent_file[$parent_file] ) )
					$parent_file = $_wp_real_parent_file[$parent_file];
				return $parent_file;
			}
		}
		if ( isset( $_wp_menu_nopriv[$plugin_page] ) ) {
			$parent_file = $plugin_page;
			if ( isset( $_wp_real_parent_file[$parent_file] ) )
					$parent_file = $_wp_real_parent_file[$parent_file];
			return $parent_file;
		}
	}

	if ( isset( $plugin_page ) && isset( $_wp_submenu_nopriv[$pagenow][$plugin_page] ) ) {
		$parent_file = $pagenow;
		if ( isset( $_wp_real_parent_file[$parent_file] ) )
			$parent_file = $_wp_real_parent_file[$parent_file];
		return $parent_file;
	}

	foreach (array_keys( $submenu ) as $parent) {
		foreach ( $submenu[$parent] as $submenu_array ) {
			if ( isset( $_wp_real_parent_file[$parent] ) )
				$parent = $_wp_real_parent_file[$parent];
			if ( $submenu_array[2] == $pagenow ) {
				$parent_file = $parent;
				return $parent;
			} else
				if ( isset( $plugin_page ) && ($plugin_page == $submenu_array[2] ) ) {
					$parent_file = $parent;
					return $parent;
				}
		}
	}

	$parent_file = '';
	return '';
}

function add_menu_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
	global $menu, $admin_page_hooks;

	$file = plugin_basename( $file );

	$menu[] = array ( $menu_title, $access_level, $file, $page_title );

	$admin_page_hooks[$file] = sanitize_title( $menu_title );

	$hookname = get_plugin_page_hookname( $file, '' );
	if (!empty ( $function ) && !empty ( $hookname ))
		add_action( $hookname, $function );

	return $hookname;
}

function add_submenu_page( $parent, $page_title, $menu_title, $access_level, $file, $function = '' ) {
	global $submenu;
	global $menu;
	global $_wp_real_parent_file;
	global $_wp_submenu_nopriv;
	global $_wp_menu_nopriv;

	$file = plugin_basename( $file );

	$parent = plugin_basename( $parent);
	if ( isset( $_wp_real_parent_file[$parent] ) )
		$parent = $_wp_real_parent_file[$parent];

	if ( !current_user_can( $access_level ) ) {
		$_wp_submenu_nopriv[$parent][$file] = true;
		return false;
	}

	// If the parent doesn't already have a submenu, add a link to the parent
	// as the first item in the submenu.  If the submenu file is the same as the
	// parent file someone is trying to link back to the parent manually.  In
	// this case, don't automatically add a link back to avoid duplication.
	if (!isset( $submenu[$parent] ) && $file != $parent  ) {
		foreach ( $menu as $parent_menu ) {
			if ( $parent_menu[2] == $parent && current_user_can( $parent_menu[1] ) )
				$submenu[$parent][] = $parent_menu;
		}
	}

	$submenu[$parent][] = array ( $menu_title, $access_level, $file, $page_title );

	$hookname = get_plugin_page_hookname( $file, $parent);
	if (!empty ( $function ) && !empty ( $hookname ))
		add_action( $hookname, $function );

	return $hookname;
}

function add_options_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
	return add_submenu_page( 'options-general.php', $page_title, $menu_title, $access_level, $file, $function );
}

function add_management_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
	return add_submenu_page( 'edit.php', $page_title, $menu_title, $access_level, $file, $function );
}

function add_theme_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
	return add_submenu_page( 'themes.php', $page_title, $menu_title, $access_level, $file, $function );
}

function add_users_page( $page_title, $menu_title, $access_level, $file, $function = '' ) {
	if ( current_user_can('edit_users') )
		$parent = 'users.php';
	else
		$parent = 'profile.php';
	return add_submenu_page( $parent, $page_title, $menu_title, $access_level, $file, $function );
}

function validate_file( $file, $allowed_files = '' ) {
	if ( false !== strpos( $file, './' ))
		return 1;

	if (':' == substr( $file, 1, 1 ))
		return 2;

	if (!empty ( $allowed_files ) && (!in_array( $file, $allowed_files ) ) )
		return 3;

	return 0;
}

function validate_file_to_edit( $file, $allowed_files = '' ) {
	$file = stripslashes( $file );

	$code = validate_file( $file, $allowed_files );

	if (!$code )
		return $file;

	switch ( $code ) {
		case 1 :
			wp_die( __('Sorry, can&#8217;t edit files with ".." in the name. If you are trying to edit a file in your WordPress home directory, you can just type the name of the file in.' ));

		case 2 :
			wp_die( __('Sorry, can&#8217;t call files with their real path.' ));

		case 3 :
			wp_die( __('Sorry, that file cannot be edited.' ));
	}
}

function get_home_path() {
	$home = get_option( 'home' );
	if ( $home != '' && $home != get_option( 'siteurl' ) ) {
		$home_path = parse_url( $home );
		$home_path = $home_path['path'];
		$root = str_replace( $_SERVER["PHP_SELF"], '', $_SERVER["SCRIPT_FILENAME"] );
		$home_path = trailingslashit( $root.$home_path );
	} else {
		$home_path = ABSPATH;
	}

	return $home_path;
}

function get_real_file_to_edit( $file ) {
	if ('index.php' == $file || '.htaccess' == $file ) {
		$real_file = get_home_path().$file;
	} else {
		$real_file = ABSPATH.$file;
	}

	return $real_file;
}

$wp_file_descriptions = array ('index.php' => __( 'Main Index Template' ), 'style.css' => __( 'Stylesheet' ), 'comments.php' => __( 'Comments' ), 'comments-popup.php' => __( 'Popup Comments' ), 'footer.php' => __( 'Footer' ), 'header.php' => __( 'Header' ), 'sidebar.php' => __( 'Sidebar' ), 'archive.php' => __( 'Archives' ), 'category.php' => __( 'Category Template' ), 'page.php' => __( 'Page Template' ), 'search.php' => __( 'Search Results' ), 'single.php' => __( 'Single Post' ), '404.php' => __( '404 Template' ), 'my-hacks.php' => __( 'my-hacks.php (legacy hacks support)' ), '.htaccess' => __( '.htaccess (for rewrite rules )' ),
	// Deprecated files
	'wp-layout.css' => __( 'Stylesheet' ), 'wp-comments.php' => __( 'Comments Template' ), 'wp-comments-popup.php' => __( 'Popup Comments Template' ));

function get_file_description( $file ) {
	global $wp_file_descriptions;

	if ( isset( $wp_file_descriptions[basename( $file )] ) ) {
		return $wp_file_descriptions[basename( $file )];
	}
	elseif ( file_exists( ABSPATH . $file ) && is_file( ABSPATH . $file ) ) {
		$template_data = implode( '', file( ABSPATH . $file ) );
		if ( preg_match( "|Template Name:(.*)|i", $template_data, $name ))
			return $name[1];
	}

	return basename( $file );
}

function update_recently_edited( $file ) {
	$oldfiles = (array ) get_option( 'recently_edited' );
	if ( $oldfiles ) {
		$oldfiles = array_reverse( $oldfiles );
		$oldfiles[] = $file;
		$oldfiles = array_reverse( $oldfiles );
		$oldfiles = array_unique( $oldfiles );
		if ( 5 < count( $oldfiles ))
			array_pop( $oldfiles );
	} else {
		$oldfiles[] = $file;
	}
	update_option( 'recently_edited', $oldfiles );
}

function get_plugin_data( $plugin_file ) {
	$plugin_data = implode( '', file( $plugin_file ));
	preg_match( "|Plugin Name:(.*)|i", $plugin_data, $plugin_name );
	preg_match( "|Plugin URI:(.*)|i", $plugin_data, $plugin_uri );
	preg_match( "|Description:(.*)|i", $plugin_data, $description );
	preg_match( "|Author:(.*)|i", $plugin_data, $author_name );
	preg_match( "|Author URI:(.*)|i", $plugin_data, $author_uri );
	if ( preg_match( "|Version:(.*)|i", $plugin_data, $version ))
		$version = trim( $version[1] );
	else
		$version = '';

	$description = wptexturize( trim( $description[1] ));

	$name = $plugin_name[1];
	$name = trim( $name );
	$plugin = $name;
	if ('' != $plugin_uri[1] && '' != $name ) {
		$plugin = '<a href="' . trim( $plugin_uri[1] ) . '" title="'.__( 'Visit plugin homepage' ).'">'.$plugin.'</a>';
	}

	if ('' == $author_uri[1] ) {
		$author = trim( $author_name[1] );
	} else {
		$author = '<a href="' . trim( $author_uri[1] ) . '" title="'.__( 'Visit author homepage' ).'">' . trim( $author_name[1] ) . '</a>';
	}

	return array('Name' => $name, 'Title' => $plugin, 'Description' => $description, 'Author' => $author, 'Version' => $version);
}

function get_plugins() {
	global $wp_plugins;

	if ( isset( $wp_plugins ) ) {
		return $wp_plugins;
	}

	$wp_plugins = array ();
	$plugin_root = ABSPATH . PLUGINDIR;

	// Files in wp-content/plugins directory
	$plugins_dir = @ dir( $plugin_root);
	if ( $plugins_dir ) {
		while (($file = $plugins_dir->read() ) !== false ) {
			if ( substr($file, 0, 1) == '.' )
				continue;
			if ( is_dir( $plugin_root.'/'.$file ) ) {
				$plugins_subdir = @ dir( $plugin_root.'/'.$file );
				if ( $plugins_subdir ) {
					while (($subfile = $plugins_subdir->read() ) !== false ) {
						if ( substr($subfile, 0, 1) == '.' )
							continue;
						if ( substr($subfile, -4) == '.php' )
							$plugin_files[] = "$file/$subfile";
					}
				}
			} else {
				if ( substr($file, -4) == '.php' )
					$plugin_files[] = $file;
			}
		}
	}

	if ( !$plugins_dir || !$plugin_files )
		return $wp_plugins;

	foreach ( $plugin_files as $plugin_file ) {
		if ( !is_readable( "$plugin_root/$plugin_file" ) )
			continue;

		$plugin_data = get_plugin_data( "$plugin_root/$plugin_file" );

		if ( empty ( $plugin_data['Name'] ) )
			continue;

		$wp_plugins[plugin_basename( $plugin_file )] = $plugin_data;
	}

	uasort( $wp_plugins, create_function( '$a, $b', 'return strnatcasecmp( $a["Name"], $b["Name"] );' ));

	return $wp_plugins;
}

function get_plugin_page_hookname( $plugin_page, $parent_page ) {
	global $admin_page_hooks;

	$parent = get_admin_page_parent();

	if ( empty ( $parent_page ) || 'admin.php' == $parent_page ) {
		if ( isset( $admin_page_hooks[$plugin_page] ))
			$page_type = 'toplevel';
		else
			if ( isset( $admin_page_hooks[$parent] ))
				$page_type = $admin_page_hooks[$parent];
	} else
		if ( isset( $admin_page_hooks[$parent_page] ) ) {
			$page_type = $admin_page_hooks[$parent_page];
		} else {
			$page_type = 'admin';
		}

	$plugin_name = preg_replace( '!\.php!', '', $plugin_page );

	return $page_type.'_page_'.$plugin_name;
}

function get_plugin_page_hook( $plugin_page, $parent_page ) {
	global $wp_filter;

	$hook = get_plugin_page_hookname( $plugin_page, $parent_page );
	if ( isset( $wp_filter[$hook] ))
		return $hook;
	else
		return '';
}

function browse_happy() {
	$getit = __( 'WordPress recommends a better browser' );
	echo '
		<p id="bh" style="text-align: center;"><a href="http://browsehappy.com/" title="'.$getit.'"><img src="images/browse-happy.gif" alt="Browse Happy" /></a></p>
		';
}

if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false)
	add_action( 'admin_footer', 'browse_happy' );

function documentation_link( $for ) {
	return;
}

function register_importer( $id, $name, $description, $callback ) {
	global $wp_importers;

	$wp_importers[$id] = array ( $name, $description, $callback );
}

function get_importers() {
	global $wp_importers;
	uasort($wp_importers, create_function('$a, $b', 'return strcmp($a[0], $b[0]);'));
	return $wp_importers;
}

function current_theme_info() {
	$themes = get_themes();
	$current_theme = get_current_theme();
	$ct->name = $current_theme;
	$ct->title = $themes[$current_theme]['Title'];
	$ct->version = $themes[$current_theme]['Version'];
	$ct->parent_theme = $themes[$current_theme]['Parent Theme'];
	$ct->template_dir = $themes[$current_theme]['Template Dir'];
	$ct->stylesheet_dir = $themes[$current_theme]['Stylesheet Dir'];
	$ct->template = $themes[$current_theme]['Template'];
	$ct->stylesheet = $themes[$current_theme]['Stylesheet'];
	$ct->screenshot = $themes[$current_theme]['Screenshot'];
	$ct->description = $themes[$current_theme]['Description'];
	$ct->author = $themes[$current_theme]['Author'];
	return $ct;
}


// array wp_handle_upload ( array &file [, array overrides] )
// file: reference to a single element of $_FILES. Call the function once for each uploaded file.
// overrides: an associative array of names=>values to override default variables with extract( $overrides, EXTR_OVERWRITE ).
// On success, returns an associative array of file attributes.
// On failure, returns $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
function wp_handle_upload( &$file, $overrides = false ) {
	// The default error handler.
	if (! function_exists( 'wp_handle_upload_error' ) ) {
		function wp_handle_upload_error( &$file, $message ) {
			return array( 'error'=>$message );
		}
	}

	// You may define your own function and pass the name in $overrides['upload_error_handler']
	$upload_error_handler = 'wp_handle_upload_error';

	// $_POST['action'] must be set and its value must equal $overrides['action'] or this:
	$action = 'wp_handle_upload';

	// Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error'].
	$upload_error_strings = array( false,
		__( "The uploaded file exceeds the <code>upload_max_filesize</code> directive in <code>php.ini</code>." ),
		__( "The uploaded file exceeds the <em>MAX_FILE_SIZE</em> directive that was specified in the HTML form." ),
		__( "The uploaded file was only partially uploaded." ),
		__( "No file was uploaded." ),
		__( "Missing a temporary folder." ),
		__( "Failed to write file to disk." ));

	// All tests are on by default. Most can be turned off by $override[{test_name}] = false;
	$test_form = true;
	$test_size = true;

	// If you override this, you must provide $ext and $type!!!!
	$test_type = true;

	// Install user overrides. Did we mention that this voids your warranty?
	if ( is_array( $overrides ) )
		extract( $overrides, EXTR_OVERWRITE );

	// A correct form post will pass this test.
	if ( $test_form && (!isset( $_POST['action'] ) || ($_POST['action'] != $action ) ) )
		return $upload_error_handler( $file, __( 'Invalid form submission.' ));

	// A successful upload will pass this test. It makes no sense to override this one.
	if ( $file['error'] > 0 )
		return $upload_error_handler( $file, $upload_error_strings[$file['error']] );

	// A non-empty file will pass this test.
	if ( $test_size && !($file['size'] > 0 ) )
		return $upload_error_handler( $file, __( 'File is empty. Please upload something more substantial.' ));

	// A properly uploaded file will pass this test. There should be no reason to override this one.
	if (! @ is_uploaded_file( $file['tmp_name'] ) )
		return $upload_error_handler( $file, __( 'Specified file failed upload test.' ));

	// A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
	if ( $test_type ) {
		$wp_filetype = wp_check_filetype( $file['name'], $mimes );

		extract( $wp_filetype );

		if ( !$type || !$ext )
			return $upload_error_handler( $file, __( 'File type does not meet security guidelines. Try another.' ));
	}

	// A writable uploads dir will pass this test. Again, there's no point overriding this one.
	if ( ! ( ( $uploads = wp_upload_dir() ) && false === $uploads['error'] ) )
		return $upload_error_handler( $file, $uploads['error'] );

	// Increment the file number until we have a unique file to save in $dir. Use $override['unique_filename_callback'] if supplied.
	if ( isset( $unique_filename_callback ) && function_exists( $unique_filename_callback ) ) {
		$filename = $unique_filename_callback( $uploads['path'], $file['name'] );
	} else {
		$number = '';
		$filename = str_replace( '#', '_', $file['name'] );
		$filename = str_replace( array( '\\', "'" ), '', $filename );
		if ( empty( $ext) )
			$ext = '';
		else
			$ext = ".$ext";
		while ( file_exists( $uploads['path'] . "/$filename" ) ) {
			if ( '' == "$number$ext" )
				$filename = $filename . ++$number . $ext;
			else
				$filename = str_replace( "$number$ext", ++$number . $ext, $filename );
		}
		$filename = str_replace( $ext, '', $filename );
		$filename = sanitize_title_with_dashes( $filename ) . $ext;
	}

	// Move the file to the uploads dir
	$new_file = $uploads['path'] . "/$filename";
	if ( false === @ move_uploaded_file( $file['tmp_name'], $new_file ) )
		wp_die( printf( __('The uploaded file could not be moved to %s.' ), $uploads['path'] ));

	// Set correct file permissions
	$stat = stat( dirname( $new_file ));
	$perms = $stat['mode'] & 0000666;
	@ chmod( $new_file, $perms );

	// Compute the URL
	$url = $uploads['url'] . "/$filename";

	$return = apply_filters( 'wp_handle_upload', array( 'file' => $new_file, 'url' => $url, 'type' => $type ) );

	return $return;
}

function wp_shrink_dimensions( $width, $height, $wmax = 128, $hmax = 96 ) {
	if ( $height <= $hmax && $width <= $wmax )
		return array( $width, $height);
	elseif ( $width / $height > $wmax / $hmax )
		return array( $wmax, (int) ($height / $width * $wmax ));
	else
		return array( (int) ($width / $height * $hmax ), $hmax );
}

function wp_import_cleanup( $id ) {
	wp_delete_attachment( $id );
}

function wp_import_upload_form( $action ) {
	$size = strtolower( ini_get( 'upload_max_filesize' ) );
	$bytes = 0;
	if (strpos($size, 'k') !== false)
		$bytes = $size * 1024;
	if (strpos($size, 'm') !== false)
		$bytes = $size * 1024 * 1024;
	if (strpos($size, 'g') !== false)
		$bytes = $size * 1024 * 1024 * 1024;
?>
<form enctype="multipart/form-data" id="import-upload-form" method="post" action="<?php echo attribute_escape($action) ?>">
<p>
<?php wp_nonce_field('import-upload'); ?>
<label for="upload"><?php _e( 'Choose a file from your computer:' ); ?></label> (<?php printf( __('Maximum size: %s' ), $size ); ?> )
<input type="file" id="upload" name="import" size="25" />
<input type="hidden" name="action" value="save" />
<input type="hidden" name="max_file_size" value="<?php echo $bytes; ?>" />
</p>
<p class="submit">
<input type="submit" value="<?php _e( 'Upload file and import' ); ?> &raquo;" />
</p>
</form>
<?php
}

function wp_import_handle_upload() {
	$overrides = array( 'test_form' => false, 'test_type' => false );
	$file = wp_handle_upload( $_FILES['import'], $overrides );

	if ( isset( $file['error'] ) )
		return $file;

	$url = $file['url'];
	$type = $file['type'];
	$file = addslashes( $file['file'] );
	$filename = basename( $file );

	// Construct the object array
	$object = array( 'post_title' => $filename,
		'post_content' => $url,
		'post_mime_type' => $type,
		'guid' => $url
	);

	// Save the data
	$id = wp_insert_attachment( $object, $file );

	return array( 'file' => $file, 'id' => $id );
}

function the_attachment_links( $id = false ) {
	$id = (int) $id;
	$post = & get_post( $id );

	if ( $post->post_type != 'attachment' )
		return false;

	$icon = get_attachment_icon( $post->ID );
	$attachment_data = wp_get_attachment_metadata( $id );
	$thumb = isset( $attachment_data['thumb'] );
?>
<form id="the-attachment-links">
<table>
	<col />
	<col class="widefat" />
	<tr>
		<th scope="row"><?php _e( 'URL' ) ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><?php echo wp_get_attachment_url(); ?></textarea></td>
	</tr>
<?php if ( $icon ) : ?>
	<tr>
		<th scope="row"><?php $thumb ? _e( 'Thumbnail linked to file' ) : _e( 'Image linked to file' ); ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo wp_get_attachment_url(); ?>"><?php echo $icon ?></a></textarea></td>
	</tr>
	<tr>
		<th scope="row"><?php $thumb ? _e( 'Thumbnail linked to page' ) : _e( 'Image linked to page' ); ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo get_attachment_link( $post->ID ) ?>" rel="attachment wp-att-<?php echo $post->ID; ?>"><?php echo $icon ?></a></textarea></td>
	</tr>
<?php else : ?>
	<tr>
		<th scope="row"><?php _e( 'Link to file' ) ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo wp_get_attachment_url(); ?>" class="attachmentlink"><?php echo basename( wp_get_attachment_url() );  ?></a></textarea></td>
	</tr>
	<tr>
		<th scope="row"><?php _e( 'Link to page' ) ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo get_attachment_link( $post->ID ) ?>" rel="attachment wp-att-<?php echo $post->ID ?>"><?php the_title(); ?></a></textarea></td>
	</tr>
<?php endif; ?>
</table>
</form>
<?php
}

function get_udims( $width, $height) {
	if ( $height <= 96 && $width <= 128 )
		return array( $width, $height);
	elseif ( $width / $height > 4 / 3 )
		return array( 128, (int) ($height / $width * 128 ));
	else
		return array( (int) ($width / $height * 96 ), 96 );
}

function wp_reset_vars( $vars ) {
	for ( $i=0; $i<count( $vars ); $i += 1 ) {
		$var = $vars[$i];
		global $$var;

		if (!isset( $$var ) ) {
			if ( empty( $_POST["$var"] ) ) {
				if ( empty( $_GET["$var"] ) )
					$$var = '';
				else
					$$var = $_GET["$var"];
			} else {
				$$var = $_POST["$var"];
			}
		}
	}
}


function wp_remember_old_slug() {
	global $post;
	$name = attribute_escape($post->post_name); // just in case
	if ( strlen($name) )
		echo '<input type="hidden" id="wp-old-slug" name="wp-old-slug" value="' . $name . '" />';
}


// If siteurl or home changed, reset cookies and flush rewrite rules.
function update_home_siteurl( $old_value, $value ) {
	global $wp_rewrite, $user_login, $user_pass_md5;

	if ( defined( "WP_INSTALLING" ) )
		return;

	// If home changed, write rewrite rules to new location.
	$wp_rewrite->flush_rules();
	// Clear cookies for old paths.
	wp_clearcookie();
	// Set cookies for new paths.
	wp_setcookie( $user_login, $user_pass_md5, true, get_option( 'home' ), get_option( 'siteurl' ));
}

add_action( 'update_option_home', 'update_home_siteurl', 10, 2 );
add_action( 'update_option_siteurl', 'update_home_siteurl', 10, 2 );

function wp_crop_image( $src_file, $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h, $src_abs = false, $dst_file = false ) {
	if ( ctype_digit( $src_file ) ) // Handle int as attachment ID
		$src_file = get_attached_file( $src_file );

	$src = wp_load_image( $src_file );

	if ( !is_resource( $src ))
		return $src;

	$dst = imagecreatetruecolor( $dst_w, $dst_h );

	if ( $src_abs ) {
		$src_w -= $src_x;
		$src_h -= $src_y;
	}

	if (function_exists('imageantialias'))
		imageantialias( $dst, true );
	
	imagecopyresampled( $dst, $src, 0, 0, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h );

	if ( !$dst_file )
		$dst_file = str_replace( basename( $src_file ), 'cropped-'.basename( $src_file ), $src_file );

	$dst_file = preg_replace( '/\\.[^\\.]+$/', '.jpg', $dst_file );

	if ( imagejpeg( $dst, $dst_file ) )
		return $dst_file;
	else
		return false;
}

function wp_load_image( $file ) {
	if ( ctype_digit( $file ) )
		$file = get_attached_file( $file );

	if ( !file_exists( $file ) )
		return sprintf(__("File '%s' doesn't exist?"), $file);

	if ( ! function_exists('imagecreatefromstring') )
		return __('The GD image library is not installed.');

	$contents = file_get_contents( $file );

	$image = imagecreatefromstring( $contents );

	if ( !is_resource( $image ) )
		return sprintf(__("File '%s' is not an image."), $file);

	return $image;
}

function wp_generate_attachment_metadata( $attachment_id, $file ) {
	$attachment = get_post( $attachment_id );

	$metadata = array();
	if ( preg_match('!^image/!', get_post_mime_type( $attachment )) ) {
		$imagesize = getimagesize($file);
		$metadata['width'] = $imagesize['0'];
		$metadata['height'] = $imagesize['1'];
		list($uwidth, $uheight) = get_udims($metadata['width'], $metadata['height']);
		$metadata['hwstring_small'] = "height='$uheight' width='$uwidth'";
		$metadata['file'] = $file;

		$max = apply_filters( 'wp_thumbnail_creation_size_limit', 3 * 1024 * 1024, $attachment_id, $file );

		if ( $max < 0 || $metadata['width'] * $metadata['height'] < $max ) {
			$max_side = apply_filters( 'wp_thumbnail_max_side_length', 128, $attachment_id, $file );
			$thumb = wp_create_thumbnail( $file, $max_side );

			if ( @file_exists($thumb) )
				$metadata['thumb'] = basename($thumb);
		}
	}
	return apply_filters( 'wp_generate_attachment_metadata', $metadata );
}

function wp_create_thumbnail( $file, $max_side, $effect = '' ) {

		// 1 = GIF, 2 = JPEG, 3 = PNG

	if ( file_exists( $file ) ) {
		$type = getimagesize( $file );

		// if the associated function doesn't exist - then it's not
		// handle. duh. i hope.

		if (!function_exists( 'imagegif' ) && $type[2] == 1 ) {
			$error = __( 'Filetype not supported. Thumbnail not created.' );
		}
		elseif (!function_exists( 'imagejpeg' ) && $type[2] == 2 ) {
			$error = __( 'Filetype not supported. Thumbnail not created.' );
		}
		elseif (!function_exists( 'imagepng' ) && $type[2] == 3 ) {
			$error = __( 'Filetype not supported. Thumbnail not created.' );
		} else {

			// create the initial copy from the original file
			if ( $type[2] == 1 ) {
				$image = imagecreatefromgif( $file );
			}
			elseif ( $type[2] == 2 ) {
				$image = imagecreatefromjpeg( $file );
			}
			elseif ( $type[2] == 3 ) {
				$image = imagecreatefrompng( $file );
			}

			if ( function_exists( 'imageantialias' ))
				imageantialias( $image, TRUE );

			$image_attr = getimagesize( $file );

			// figure out the longest side

			if ( $image_attr[0] > $image_attr[1] ) {
				$image_width = $image_attr[0];
				$image_height = $image_attr[1];
				$image_new_width = $max_side;

				$image_ratio = $image_width / $image_new_width;
				$image_new_height = $image_height / $image_ratio;
				//width is > height
			} else {
				$image_width = $image_attr[0];
				$image_height = $image_attr[1];
				$image_new_height = $max_side;

				$image_ratio = $image_height / $image_new_height;
				$image_new_width = $image_width / $image_ratio;
				//height > width
			}

			$thumbnail = imagecreatetruecolor( $image_new_width, $image_new_height);
			@ imagecopyresampled( $thumbnail, $image, 0, 0, 0, 0, $image_new_width, $image_new_height, $image_attr[0], $image_attr[1] );

			// If no filters change the filename, we'll do a default transformation.
			if ( basename( $file ) == $thumb = apply_filters( 'thumbnail_filename', basename( $file ) ) )
				$thumb = preg_replace( '!(\.[^.]+)?$!', '.thumbnail' . '$1', basename( $file ), 1 );

			$thumbpath = str_replace( basename( $file ), $thumb, $file );

			// move the thumbnail to its final destination
			if ( $type[2] == 1 ) {
				if (!imagegif( $thumbnail, $thumbpath ) ) {
					$error = __( "Thumbnail path invalid" );
				}
			}
			elseif ( $type[2] == 2 ) {
				if (!imagejpeg( $thumbnail, $thumbpath ) ) {
					$error = __( "Thumbnail path invalid" );
				}
			}
			elseif ( $type[2] == 3 ) {
				if (!imagepng( $thumbnail, $thumbpath ) ) {
					$error = __( "Thumbnail path invalid" );
				}
			}

		}
	} else {
		$error = __( 'File not found' );
	}

	if (!empty ( $error ) ) {
		return $error;
	} else {
		return apply_filters( 'wp_create_thumbnail', $thumbpath );
	}
}

?>