5 files changed, 8 insertions, 8 deletions
diff --git a/admin/include/functions_upgrade.php b/admin/include/functions_upgrade.php
index b3f4692e6..50150f64a 100644
--- a/admin/include/functions_upgrade.php
+++ b/admin/include/functions_upgrade.php
@@ -86,7 +86,7 @@ function deactivate_non_standard_plugins()
   $query = '
 SELECT id
 FROM '.PREFIX_TABLE.'plugins
-WHERE state = "active"
+WHERE state = \'active\'
 AND id NOT IN (\'' . implode('\',\'', $standard_plugins) . '\')
 ;';
 
@@ -101,7 +101,7 @@ AND id NOT IN (\'' . implode('\',\'', $standard_plugins) . '\')
   {
     $query = '
 UPDATE '.PREFIX_TABLE.'plugins
-SET state="inactive"
+SET state=\'inactive\'
 WHERE id IN (\'' . implode('\',\'', $plugins) . '\')
 ;';
     pwg_query($query);
diff --git a/include/functions_category.inc.php b/include/functions_category.inc.php
index 263e26708..e6ebf5c84 100644
--- a/include/functions_category.inc.php
+++ b/include/functions_category.inc.php
@@ -431,7 +431,7 @@ SELECT id, permalink, 0 AS is_old
       {
         $query='
 UPDATE '.OLD_PERMALINKS_TABLE.' SET last_hit=NOW(), hit=hit+1
-  WHERE permalink="'.$permalinks[$i].'" AND cat_id='.$cat_id.'
+  WHERE permalink=\''.$permalinks[$i].'\' AND cat_id='.$cat_id.'
   LIMIT 1';
         pwg_query($query);
       }
diff --git a/picture.php b/picture.php
index 2aa28f886..2fae0cda4 100644
--- a/picture.php
+++ b/picture.php
@@ -52,9 +52,9 @@ SELECT id, file, level
   else
   {// url given by file name
     assert( !empty($page['image_file']) );
-    $query .= 'file LIKE "' .
+    $query .= 'file LIKE \'' .
       str_replace(array('_','%'), array('/_','/%'), $page['image_file'] ).
-      '.%" ESCAPE "/" LIMIT 1';
+      '.%\' ESCAPE \'/\' LIMIT 1';
   }
   if ( ! ( $row = pwg_db_fetch_assoc(pwg_query($query)) ) )
   {// element does not exist
diff --git a/plugins/LocalFilesEditor/maintain.inc.php b/plugins/LocalFilesEditor/maintain.inc.php
index 35aca4b30..0f1d31e3f 100644
--- a/plugins/LocalFilesEditor/maintain.inc.php
+++ b/plugins/LocalFilesEditor/maintain.inc.php
@@ -27,7 +27,7 @@ function plugin_install()
 
   $query = '
 INSERT INTO ' . CONFIG_TABLE . ' (param,value,comment)
-VALUES ("LocalFilesEditor" , "off" , "LocalFiles Editor plugin parameters");';
+VALUES (\'LocalFilesEditor\' , \'off\' , \'LocalFiles Editor plugin parameters\');';
 
   pwg_query($query);
 }
@@ -36,7 +36,7 @@ function plugin_uninstall()
 {
   global $prefixeTable;
 
-  $query = 'DELETE FROM ' . CONFIG_TABLE . ' WHERE param="LocalFilesEditor" LIMIT 1;';
+  $query = 'DELETE FROM ' . CONFIG_TABLE . ' WHERE param=\'LocalFilesEditor\' LIMIT 1;';
   pwg_query($query);
 }
 
diff --git a/plugins/c13y_upgrade/initialize.inc.php b/plugins/c13y_upgrade/initialize.inc.php
index 768643a70..00effd05e 100644
--- a/plugins/c13y_upgrade/initialize.inc.php
+++ b/plugins/c13y_upgrade/initialize.inc.php
@@ -47,7 +47,7 @@ where
 group by
   upper('.$conf['user_fields']['email'].')
 having count(*) > 1
-limit 0,1
+limit 1
 ;';
 
   if (pwg_db_fetch_row(pwg_query($query)))