3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $input = array( array( 'ps1', 'google 1' ), array( 'ps2', 'google 2' ) ); echo implode(', ', array_map(function ($entry) { return $entry['tag_name']; }, $input));
based on ltBZ0
Output for 5.3.20 - 7.2.0
Notice: Undefined index: tag_name in /in/JmEPG on line 12 Notice: Undefined index: tag_name in /in/JmEPG on line 12 ,