3v4l.org

run code in 300+ PHP versions simultaneously
<?php $allIcons = []; foreach ($iconSet as $doc => $icons) { foreach($icons as $icon) { $allIcons[$doc][] = $icon; } }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $iconSet in /in/fFO9r on line 3 Warning: foreach() argument must be of type array|object, null given in /in/fFO9r on line 3
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: iconSet in /in/fFO9r on line 3 Warning: Invalid argument supplied for foreach() in /in/fFO9r on line 3
Output for 7.3.32 - 7.3.33
Warning: Invalid argument supplied for foreach() in /in/fFO9r on line 3
preferences:
206.57 ms | 401 KiB | 339 Q