3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo implode(', ', array_keys($_SERVER));
Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
TERM, PATH, LANG, SHELL, MAIL, LOGNAME, USER, HOME, PHP_SELF, SCRIPT_NAME, SCRIPT_FILENAME, PATH_TRANSLATED, DOCUMENT_ROOT, REQUEST_TIME_FLOAT, REQUEST_TIME, argv, argc
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29
TERM, PATH, LANG, SHELL, MAIL, LOGNAME, USER, HOME, PHP_SELF, SCRIPT_NAME, SCRIPT_FILENAME, PATH_TRANSLATED, DOCUMENT_ROOT, REQUEST_TIME, argv, argc
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
TERM, PATH, LANG, SHELL, MAIL, LOGNAME, USER, HOME, PHP_SELF, REQUEST_TIME, argv, argc
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
TERM, PATH, LANG, SHELL, MAIL, LOGNAME, USER, HOME, PHP_SELF, argv, argc

preferences:
289.45 ms | 402 KiB | 461 Q