3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $list_of_lists_of_lists = [[1, 2, [3]], [4, 3, 4, [5, 3, 4]], 3]; $flattened_list = []; function flatten($l){ foreach ($l as $value) { if (is_array($value)) { returnflatten($value); }else{ $flattened_list[] = $value; } } return $flattened_list; } $flattened_list = flatten($list_of_lists_of_lists); print_r($flattened_list);
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function returnflatten() in /in/vv1U3:9 Stack trace: #0 /in/vv1U3(17): flatten(Array) #1 {main} thrown in /in/vv1U3 on line 9
Process exited with code 255.
Output for 5.4.11 - 5.6.28
Fatal error: Call to undefined function returnflatten() in /in/vv1U3 on line 9
Process exited with code 255.
Output for 5.3.21 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/vv1U3 on line 3
Process exited with code 255.