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<?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 git.master, git.master_jit, rfc.property-hooks
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.

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