3v4l.org

run code in 300+ PHP versions simultaneously
<?php // Ensure that PHP's magic constant __DIR__ is defined - no matter of the PHP version. // If magic __DIR__ constant is not defined, define it. (@__DIR__ == '__DIR__') && define('__DIR__', dirname(__FILE__)); // All PHP versions (>= 4.3.1) can use the magic __DIR__ constant now.. // Demo (outputs and VLD opcodes) here: http://3v4l.org/bm6e1 ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
334.57 ms | 405 KiB | 460 Q