Index: t3lib/class.t3lib_div.php
===================================================================
--- t3lib/class.t3lib_div.php	(revision 8542)
+++ t3lib/class.t3lib_div.php	(working copy)
@@ -2151,6 +2151,34 @@
 	}
 
 	/**
+	* Takes an array and returns a flattened array
+	* Usage: 1
+	*
+	* @param	array		recursive array
+	* @return	array		flat array
+	*/
+	public static function flattenArray(array $array) {
+		do {
+			$subArraysFound = false;
+
+			foreach($array as $key => $value) {
+				if(is_array($value)){
+					foreach($value as $subkey => $subvalue) {
+						if(is_array($subvalue)) {
+							$subArraysFound = true;
+						}
+						$array[$key.$subkey] = $subvalue;
+					}
+					unset($array[$key]);
+				}
+			}
+
+		} while($subArraysFound);
+
+		return $array;
+	}
+
+	/**
 	 * Creates recursively a JSON literal from a multidimensional associative array.
 	 * Uses native function of PHP >= 5.2.0
 	 *