- Output for 5.4.0 - 5.4.23
- Parse error: syntax error, unexpected ',' in /in/pIpZA on line 3
Process exited with code 255. - Output for 5.3.0 - 5.3.28
- Parse error: syntax error, unexpected '[' in /in/pIpZA on line 3
Process exited with code 255.
<?php
$a = ['a' => 1, 2 => 2, '3' =>, 3 => '3'];
echo array_keys($a);