3v4l.org

run code in 300+ PHP versions simultaneously
<?php $input = array( array( 'tag_name' => 'google' ), array( 'tag_name' => 'technology' ) ); echo implode(', ', array_map(function ($entry) { return $entry['tag_name']; }, $input));
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
google, technology
preferences:
82.23 ms | 408 KiB | 5 Q