PHP making clickable links - php

Question

I have here a function that creates a clickable link:
function makeClickableLinks($text) {
$notIncludedonLink = preg_replace('/\b(https?|ftp|file):\/\/[-A-Z0-9+&##\/%?=~_|$!:,.;]*[A-Z0-9+&##\/%=~_|$]/i', '', $text); // removing not included on the link
$urlLink = str_replace($notIncludedonLink,'',$text);
$finalText = str_replace($urlLink,''.$urlLink.'',$text);
return $finalText;
}
But instead of returning plain clickable link:
http://docs.google.com/
it displays:
http://docs.google.com/
I tried using htmlentities but it doesn't work.
Here's a JS code that sends data to server:
function checkNewLink() {
var latestId = $("input[name=latestLink]").val();
$('.newReply').load("links/ajax.php?action=newreply&msgid=<?php echo $msgId; ?>&latestid=" + latestId);
}
setInterval("checkNewLink()", 200);
where latestId contains the inputted link. It will be sent to ajax.php. Every 200 ms, it will check if there are new inputted link.

Answer 1

<?php
function makeClickableLinks($text){
return preg_replace('!(((f|ht)tp(s)?://)[-a-zA-Zа-яА-Я()0-9#:%_+.~#?&;//=]+)!i', '$1', $text);
}
echo makeClickableLinks('test http://docs.google.com/ test');
output code (http://codepad.org/EZE1HFZ4)
test http://docs.google.com/ test
AFTER UPDATE
change
setInterval("checkNewLink()", 200);
to
setInterval(function(){ checkNewLink() }, 200);
read setInterval() Method