Changeset 11433 for trunk/wp-includes/formatting.php

Timestamp:

05/22/2009 05:44:26 PM (15 years ago)

Author:

westi

Message:

Introduce sanitise_css_classname() and use it to give categories, tags, users etc meaningful classnames where possible. Falls back to the id if not. Fixes #8446.

File:

• trunk/wp-includes/formatting.php (modified) (1 diff)

trunk/wp-includes/formatting.php

@@ -717 +717 @@
         return false;
     return $orderby;
+}
+
+/**
+ * Santises a css classname to ensure it only contains valid characters
+ * 
+ * Strips the classname down to A-Z,a-z,0-9,'-' if this results in an empty
+ * string then it will return the alternative value supplied.
+ *  
+ * @param string $classname The classname to be sanitised
+ * @param string $alternative The value to return if the sanitisation end's up as an empty string.
+ * @return string The sanitised value
+ */
+function sanitise_css_classname($classname, $alternative){
+    //Strip out any % encoded octets
+    $sanitised = preg_replace('|%[a-fA-F0-9][a-fA-F0-9]|', '', $classname);
+    
+    //Limit to A-Z,a-z,0-9,'-'
+    $sanitised = preg_replace('/[^A-Za-z0-9-]/', '', $sanitised);
+    
+    if ('' == $sanitised)
+        $sanitised = $alternative;
+    
+    return apply_filters('sanitise_css_classname',$sanitised, $classname, $alternative);    
 }