From 30899af7b84b050a47f44a26959c25f0e33c8526 Mon Sep 17 00:00:00 2001
From: lubosdz <lubosdz@gmail.com>
Date: Tue, 8 Aug 2023 11:05:47 +0200
Subject: [PATCH] fix PHP 8.2 error "Passing null to parameter is deprecated"

---
 framework/web/CClientScript.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/framework/web/CClientScript.php b/framework/web/CClientScript.php
index 71a3b66e0d..1b3d7ae2c9 100644
--- a/framework/web/CClientScript.php
+++ b/framework/web/CClientScript.php
@@ -411,7 +411,7 @@ public function renderHead(&$output)
 		if($html!=='')
 		{
 			$count=0;
-			$output=preg_replace('/(<title\b[^>]*>|<\\/head\s*>)/is','<###head###>$1',$output,1,$count);
+			$output=preg_replace('/(<title\b[^>]*>|<\\/head\s*>)/is','<###head###>$1',(string)$output,1,$count);
 			if($count)
 				$output=str_replace('<###head###>',$html,$output);
 			else
@@ -442,7 +442,7 @@ public function renderBodyBegin(&$output)
 		if($html!=='')
 		{
 			$count=0;
-			$output=preg_replace('/(<body\b[^>]*>)/is','$1<###begin###>',$output,1,$count);
+			$output=preg_replace('/(<body\b[^>]*>)/is','$1<###begin###>',(string)$output,1,$count);
 			if($count)
 				$output=str_replace('<###begin###>',$html,$output);
 			else
@@ -461,7 +461,7 @@ public function renderBodyEnd(&$output)
 			return;
 
 		$fullPage=0;
-		$output=preg_replace('/(<\\/body\s*>)/is','<###end###>$1',$output,1,$fullPage);
+		$output=preg_replace('/(<\\/body\s*>)/is','<###end###>$1',(string)$output,1,$fullPage);
 		$html='';
 		if(isset($this->scriptFiles[self::POS_END]))
 		{