follow coding style and use single quotes in php

apps/bookmarks/ajax/updateList.php

@@ -27,19 +27,19 @@ $RUNTIME_NOSETUPFS=true;
 require_once('../../../lib/base.php');
 
 // We send json data
-header( "Content-Type: application/jsonrequest" );
+header( 'Content-Type: application/jsonrequest' );
 
 // Check if we are a user
 if( !OC_User::isLoggedIn()){
-	echo json_encode( array( "status" => "error", "data" => array( "message" => "Authentication error" )));
+	echo json_encode( array( 'status' => 'error', 'data' => array( 'message' => 'Authentication error' )));
 	exit();
 }
 
 $params=array(OC_User::getUser());
-$CONFIG_DBTYPE = OC_Config::getValue( "dbtype", "sqlite" );
+$CONFIG_DBTYPE = OC_Config::getValue( 'dbtype', 'sqlite' );
 
 //Filter for tag?
-$filterTag = isset($_GET["tag"]) ? '%' . urldecode($_GET["tag"]) . '%' : false;
+$filterTag = isset($_GET['tag']) ? '%' . urldecode($_GET['tag']) . '%' : false;
 if($filterTag){
 	$sqlFilterTag = 'HAVING tags LIKE ?';
 	$params[] = $filterTag;
@@ -47,27 +47,27 @@ if($filterTag){
 	$sqlFilterTag = '';
 }
 
-$offset = isset($_GET["page"]) ? intval($_GET["page"]) * 10 : 0;
+$offset = isset($_GET['page']) ? intval($_GET['page']) * 10 : 0;
 $params[] = $offset;
 
 if( $CONFIG_DBTYPE == 'sqlite' or $CONFIG_DBTYPE == 'sqlite3' ){
-	$_gc_separator = ", ' '";
+	$_gc_separator = ', \' \'';
 } else {
-	$_gc_separator = "SEPARATOR ' '";
+	$_gc_separator = 'SEPARATOR \' \'';
 }
 
 //FIXME: bookmarks without tags are not being retrieved
-$query = OC_DB::prepare("
-	SELECT url, title, description, GROUP_CONCAT( tag $_gc_separator ) AS tags
+$query = OC_DB::prepare('
+	SELECT url, title, description, GROUP_CONCAT( tag '.$_gc_separator.' ) AS tags
 	FROM *PREFIX*bookmarks, *PREFIX*bookmarks_tags 
 	WHERE *PREFIX*bookmarks.id = *PREFIX*bookmarks_tags.bookmark_id
 		AND *PREFIX*bookmarks.user_id = ?
 	GROUP BY url
-	$sqlFilterTag
+	'.$sqlFilterTag.'
 	ORDER BY *PREFIX*bookmarks.id DESC 
-	LIMIT ?,  10");
+	LIMIT ?,  10');
 	
 
 $bookmarks = $query->execute($params)->fetchAll();
 
-echo json_encode( array( "status" => "success", "data" => $bookmarks));
+echo json_encode( array( 'status' => 'success', 'data' => $bookmarks));