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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = ['foo' => 'bar']; $b = ['foo' => ['bar' => null, 'buz' => null]]; // you need to fix this or special case int keys $c = ['foo' => ['bar' => 'buz']]; function treeMe($array) { if (!is_array($array) || !$array) { return $array; } $tmp = []; foreach ($array as $k => $v) { $tmp[$k] = treeMe($v); } return $tmp; } var_dump(treeMe($a)); var_dump(treeMe($b)); var_dump(treeMe($c));
Output for 5.4.0 - 7.1.0
array(1) { ["foo"]=> string(3) "bar" } array(1) { ["foo"]=> array(2) { ["bar"]=> NULL ["buz"]=> NULL } } array(1) { ["foo"]=> array(1) { ["bar"]=> string(3) "buz" } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/GrZis on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/GrZis on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GrZis on line 3
Process exited with code 255.