Online PHP editor | refs for p3oYR

<?php $links = array( 'test.com', 'http://test.net', 'https://secure.net', 'www.test.net', 'spotify:csad456ds4a6d', 'hey', 'hey.net', 'mailto:victor.loux@mtcmedia.co.uk', '192.168.0.1', 'ftp://test@mtcmedia.co.uk' ); foreach($links as $link) { $link = addhttp($link); echo $link . PHP_EOL; } function addhttp($url) { if (!preg_match("~^(?:f|ht)tps?://~i", $url)) { $url = "http://" . $url; } return $url; }