ผมต้องการ จะเปลี่ยนค่าใน url ให้เป็น xxxx นะครับ จากคำถาม ถ้าผมมีตัวแปร ที่มีข้อมูล url

$temp = preg_replace("#(^|[\n ])([\w]+?://[^ \"\n\r\t<]*)#is", "http://xxx.xxxxxxxxx.xxx", $temp);

<?php

$temp ="https://www.thaicreate.com/php/forum/033544.html  www.thaicreate.com<br/> ";
$temp .="http://www.gcom.com is good website please visit to www.gcom.com<br/>";
$temp .="http://192.168.1.1  192.168.1.1<br/>";
$temp .="business.org ftp://business.org ";
echo "BEFORE:<br/>$temp<br/>";
echo "AFTER:<br/>";
echo url2x($temp);
function url2x($temp){
	$protocol =array("/(http:\/\/)/","/(https:\/\/)/","/(ftp:\/\/)/");
	$replace =array("xxxx://","xxxxx://","xxx://");
	$temp = preg_replace($protocol,$replace,$temp); // เปลี่ยนโปรโตคอลให้เป็น xx://
	$posURL=0;  
	$posNextURL =strpos($temp,"xxx://",$posURL)+strlen("xxx://");
	while($posURL<$posNextURL){   // วนลูปหา url ตัวอื่น
		$posURL=$posNextURL ;
		$posEndURL= strpos($temp,' ',$posURL);
		if($posURL>$posEndURL) $posEndURL=strlen($temp);
		$URLlen=$posEndURL-$posURL;
		$url =substr($temp,$posURL,$URLlen);
		$replace =preg_replace("/[^\.\/<>]/","x",$url);
		$temp = preg_replace("($url)",$replace,$temp); //เปลี่ยน url  นี้ให้เป็น xx
		$parentURL=preg_replace('/([\w]+)\/(.*)/','\\1',$url);
		$replace =preg_replace("/[^\.\/<>]/","x",$parentURL);
		$temp = preg_replace("($parentURL)",$replace,$temp);
		$posNextURL=strpos($temp,"xxx://",$posURL)+strlen("xxx://");  
		$posURL =$posEndURL+1;
	}
	return  $temp;
}
?>