From 3b692c4788f7be1d178216346f36e68f781a777d Mon Sep 17 00:00:00 2001
From: Leo Feyer <github@contao.org>
Date: Fri, 19 Jan 2018 15:11:46 +0100
Subject: [PATCH] Remove the redundant regex check.

---
 system/modules/core/library/Contao/Database/Mysql.php  | 5 +----
 system/modules/core/library/Contao/Database/Mysqli.php | 5 +----
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/system/modules/core/library/Contao/Database/Mysql.php b/system/modules/core/library/Contao/Database/Mysql.php
index 3231100435..c6ec78bb73 100644
--- a/system/modules/core/library/Contao/Database/Mysql.php
+++ b/system/modules/core/library/Contao/Database/Mysql.php
@@ -95,10 +95,7 @@ protected function get_error()
 	 */
 	protected function find_in_set($strKey, $varSet, $blnIsField=false)
 	{
-		if (preg_match('/^[A-Za-z0-9_$]+$/', $strKey))
-		{
-			$strKey = static::quoteIdentifier($strKey);
-		}
+		$strKey = static::quoteIdentifier($strKey);
 
 		if ($blnIsField)
 		{
diff --git a/system/modules/core/library/Contao/Database/Mysqli.php b/system/modules/core/library/Contao/Database/Mysqli.php
index 8728b0fce6..70ae38af4c 100644
--- a/system/modules/core/library/Contao/Database/Mysqli.php
+++ b/system/modules/core/library/Contao/Database/Mysqli.php
@@ -85,10 +85,7 @@ protected function get_error()
 	 */
 	protected function find_in_set($strKey, $varSet, $blnIsField=false)
 	{
-		if (preg_match('/^[A-Za-z0-9_$]+$/', $strKey))
-		{
-			$strKey = static::quoteIdentifier($strKey);
-		}
+		$strKey = static::quoteIdentifier($strKey);
 
 		if ($blnIsField)
 		{