3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (@__DIR__ != '__DIR__') { echo 'magic __DIR__ constant NOT defined' . PHP_EOL; define('__DIR__', substr(__FILE__, 0, strrpos(__FILE__, DIRECTORY_SEPARATOR))); } else { echo 'magic __DIR__ constant IS defined' . PHP_EOL; } var_dump(__DIR__);
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
magic __DIR__ constant NOT defined string(3) "/in"
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 magic __DIR__ constant NOT defined string(3) "/in"
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
magic __DIR__ constant IS defined Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/XAa0N on line 9 string(7) "__DIR__"
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/XAa0N on line 7 magic __DIR__ constant IS definedPHP_EOL Notice: Use of undefined constant __DIR__ - assumed '__DIR__' in /in/XAa0N on line 9 string(7) "__DIR__"
preferences:
215.65 ms | 405 KiB | 348 Q