Linkify all urls in text with php

It is a good idea to convert all urls into links in your web application like contact form, comment forms, chat application etc. To find and replace all urls with their links we will use php preg_replace function. See below example

$text = "Hello Friends my website url is http://99webtools.com";
$text = preg_replace("~[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]~",'<a href="$0">$0</a>',$text);
echo $text;

Output
Hello Friends my website url is http://99webtools.com