3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pre ="<a href=\""; $post= "</a>"; $in = array('http://">http', 'ftp://">ftp', 'mailto://">mailto', '#">HASH', '//">2xfw slash', '\\\\hostname\\xyz\\Informatiker.mp4"> bs bs', '&#92;&#92;hostname&#92;xyz&#92;Informatiker.mp4"> BS2', '\\\\">2x Bw slash', 'file://">file', 'relative/path">relative/path' ); $replacements = array('/((?:href|src) *= *[\'"](?!(http|ftp|mailto|file|javascript|#|[a-z]+:|\\\\|\/\/)))(\/?)/i' => "$1" . "http://www.server.tld/ABSOLUTE/PATH/" ); foreach($in as $test) { echo "\n". '<<pre>'; $r = $pre . $test . $post; echo "$r \t\t=>\t\t" . preg_replace(array_keys($replacements), $replacements, $r); echo '</pre>'; }

preferences:
39.05 ms | 402 KiB | 5 Q