From 276c00641cd20860521075e44e2e3789c8d9fa6b Mon Sep 17 00:00:00 2001
From: Christian Weiske <cweiske@cweiske.de>
Date: Fri, 11 Aug 2017 21:55:57 +0200
Subject: [PATCH] Replace preg_replace('//e') with preg_replace_callback

Can be tested with the "*" filter
---
 inc/functions.php | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/inc/functions.php b/inc/functions.php
index cb75190..db8c6b0 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -357,9 +357,13 @@ function ldap_store_objectclasses($dn,$classes){
  * @author Andreas Gohr <andi@splitbrain.org>
  */
 function ldap_filterescape($string){
-  return preg_replace('/([\x00-\x1F\*\(\)\\\\])/e',
-                            '"\\\\\".join("",unpack("H2","$1"))',
-                            $string);
+  return preg_replace_callback(
+    '/([\x00-\x1F\*\(\)\\\\])/',
+    function ($matches) {
+      return "\\" . implode("", unpack("H2", $matches[1]));
+    },
+    $string
+  );
 }
 
 /**
-- 
2.39.2