3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = 'a'; if(filter_var($value, FILTER_VALIDATE_INT) !== false) { if(is_int($value) === true) { echo 'ok'; } } else{ echo '--'; } else { echo 'ko'; } ?>
Output for 5.4.0 - 5.4.29
Parse error: syntax error, unexpected 'else' (T_ELSE) in /in/8cVpE on line 11
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_ELSE in /in/8cVpE on line 11
Process exited with code 255.
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178.15 ms | 1394 KiB | 66 Q