Index: CoreParserFunctions.php
===================================================================
--- CoreParserFunctions.php	(revision 64623)
+++ CoreParserFunctions.php	(working copy)
@@ -49,6 +49,7 @@
 		$parser->setFunctionHook( 'pagesincategory',  array( __CLASS__, 'pagesincategory'  ), SFH_NO_HASH );
 		$parser->setFunctionHook( 'pagesize',         array( __CLASS__, 'pagesize'         ), SFH_NO_HASH );
 		$parser->setFunctionHook( 'protectionlevel',  array( __CLASS__, 'protectionlevel'  ), SFH_NO_HASH );
+		$parser->setFunctionHook( 'protectionexpiry', array( __CLASS__, 'protectionexpiry' ), SFH_NO_HASH );		
 		$parser->setFunctionHook( 'namespace',        array( __CLASS__, 'mwnamespace'      ), SFH_NO_HASH );
 		$parser->setFunctionHook( 'namespacee',       array( __CLASS__, 'namespacee'       ), SFH_NO_HASH );
 		$parser->setFunctionHook( 'talkspace',        array( __CLASS__, 'talkspace'        ), SFH_NO_HASH );
@@ -511,6 +512,21 @@
 		# multiple values in the future
 		return implode( $restrictions, ',' );
 	}
+	
+	/**
+	* Returns the requested protection expiry time for the current page 
+	* as a 14-character timestamp
+	*/
+	static function protectionexpiry ( $parser, $type = '' ) {
+		$expiry = $parser->mTitle->getRestrictionExpiry( strtolower( $type ) );
+		
+		// getRestrictionExpiry() returns false on invalid type; trying to
+		//   match protectionlevel() function that returns empty string instead
+		if ( $expiry === false) {
+			$expiry = '';
+		}
+		return $expiry;
+	}
 
 	static function language( $parser, $arg = '' ) {
 		global $wgContLang;