twitterify.php

<?php
//regex test: http://regexhero.net/tester/?id=c4b2c455-b1e3-40b8-969e-b5b8240b7324

	public static function twitterify($text) {
		$search = array(
			'|(http://[^ ]+)|',
			'/(^|[^a-z0-9_])@(\w*[a-z]+[0-9a-ž_]*)/i',
			'/(^|[^a-z0-9_])#(\w*[a-z]+[0-9a-ž_]*)/i',
		);
		$replace = array(
			'<a href="$1" title="$1">$1</a>',
			'$1<a href="http://twitter.com/$2" title="$2">@$2</a>',
			'$1<a href="http://twitter.com/search?q=%23$2" title="$2">#$2</a>',
		);
		return preg_replace($search, $replace, $text);
	}
?>