3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $addr = "http://www.example.com/?pk_lol=VAgin&utm_campaign=printemps&utm_medium=e-mail&utm_source=newsletter1&utm_content=lien-en-haut"; $pattern ="/(utm_campaign=.[^&]+)?/";//(utm_medium=.[^&]+)?(utm_source=.[^&]+)?/"; preg_match($pattern, $addr, $result); echo $result[1];
Output for 5.5.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined offset: 1 in /in/8om9h on line 9
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined index: 1 in /in/8om9h on line 9
Output for 4.3.0 - 5.4.45