Ticket #5384: wp-flag-api-r6342-isset.patch

wordpress/wp-includes/functions.php

@@ -402 +402 @@
         return $data;
 }
 
+/* flag functions */
 
+function _wp_flag($name, $value=NULL) {
+        // flags are stored in a static associative array
+        static $_flags = array();
+
+        if ( !is_scalar($name) or empty($name) )
+                return new WP_Error( 'invalid_flag_name', __('Invalid flag name') );
+                
+        $name = strval($name);
+        
+        // if a value was specified, change it
+        if (func_num_args() > 1) {
+                if ($value === NULL) { // null means unset
+                        unset($_flags[$name]);
+                        return NULL;
+                }
+                else
+                        return $_flags[$name] = $value;
+        }
+        // otherwise just return the existing value without changing it
+        return ( isset($_flags[$name]) ) ? $_flags[$name] : NULL;
+
+}
+
+function wp_flag_set($name, $value=true) {
+        return _wp_flag($name, $value);
+}
+
+function wp_flag_get($name, $default=NULL) {
+        $flag = _wp_flag($name);
+        if ( $flag === NULL )
+                return $default;
+        else
+                return $flag;
+}
+
+function wp_flag_unset($name) {
+        return _wp_flag($name, NULL);
+}
+
+
 function gzip_compression() {
         if ( !get_option( 'gzipcompression' ) || ini_get( 'zlib.output_compression' ) == 'On' || ini_get( 'zlib.output_compression_level' ) > 0  || ini_get( 'output_handler' ) == 'ob_gzhandler' || !extension_loaded( 'zlib' ) )
                 return false;