php ต้องการใส่ link อัตโนมัติให้กับ บทความครับ ขอ code php ต้องการใส่ link อัตโนมัติให้กับ บทความครับ

<?php
/*** example usage ***/
$string='http://www.phpro.org';
echo makelink($string);

/**
*
* Function to make URLs into links
*
* @param string The url string
*
* @return string
*
**/
function makeLink($string){

/*** make sure there is an http:// on all URLs ***/
$string = preg_replace("/([^\w\/])(www\.[a-z0-9\-]+\.[a-z0-9\-]+)/i", "$1http://$2",$string);
/*** make all URLs links ***/
$string = preg_replace("/([\w]+:\/\/[\w-?&;#~=\.\/\@]+[\w\/])/i","<a target=\"_blank\" href=\"$1\">$1</A>",$string);
/*** make all emails hot links ***/
$string = preg_replace("/([\w-?&;#~=\.\/]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?))/i","<A HREF=\"mailto:$1\">$1</A>",$string);

return $string;
}

?>

function autolink($temp)
{
//link email
$temp = preg_replace("#(^|[\n ])([a-z0-9&\-_.]+?)@([\w\-]+\.([\w\-\.]+\.)*[\w]+)#i", "\\1<a href=\"mailto:\\2@\\3\"><font color=#FF6600>\\2@\\3</font></a>", $temp);

//link http://
$temp = preg_replace("#(^|[\n ])([\w]+?://[^ \"\n\r\t<]*)#is", "\\1<a href=\"\\2\" target=\"_blank\"><font color=#FF6600>\\2</font></a>", $temp);

//link www.
$temp = preg_replace("#(^|[\n ])((www|ftp)\.[^ \"\t\n\r<]*)#is", "\\1<a href=\"http://\\2\" target=\"_blank\"><font color=#FF6600>\\2</font></a>", $temp);

return ( $temp ) ;
}