3v4l.org

run code in 300+ PHP versions simultaneously
<?php // In response to http://www.php.net/manual/en/language.constants.predefined.php#113130 // In fact, you can define magic constants too. (@__DIR__ == '__DIR__') && define('__DIR__', dirname(__FILE__)); echo "result of var_dump(__DIR__):\r\n"; var_dump(__DIR__);
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 - 5.6.30, 7.0.0 - 7.0.20, 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 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
result of var_dump(__DIR__): string(3) "/in"
preferences:
151.66 ms | 410 KiB | 5 Q