3v4l.org

run code in 300+ PHP versions simultaneously
<?php $original = [ 'some' => 1, 'thing' => 2, ]; $augmented = [ 'app' => 'mail', ]; for ($i = 0; $i < 100000; $i++) { //array_merge($original, $augmented); if (!isset($original['app'])) { $original['app'] = 'mail'; } }
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14

preferences:
194.85 ms | 407 KiB | 5 Q