3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [0,1,2[3,4,[5,6]]]; $recit = new RecursiveArrayIterator($arr); $it = new RecursiveTreeIterator($recit); foreach($it as $key=>$val) { echo $key . '=>' . $val, PHP_EOL; }
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '[', expecting ']' in /in/S8rou on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/S8rou on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/S8rou on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/S8rou on line 2
Process exited with code 255.
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226.4 ms | 1395 KiB | 121 Q