Only create function for same expression once

1 files changed, 4 insertions, 1 deletions

diff --git a/it.class b/it.class
index addcf64..ab56894 100644
--- a/it.class
+++ b/it.class
@@ -650,7 +650,10 @@ function date($format = "", $stamp = null)
  */
 function map($expression, $array)
 {
-	$func = create_function('$k,$v', "return $expression;");
+	static $cache = array();
+
+	if (!($func = $cache[$expression]))
+		$func = $cache[$expression] = create_function('$k,$v', "return $expression;");
 
 	foreach ($array as $k => $v)
 		$result[$k] = $func($k, $v);