3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo date_default_timezone_get(), "\n"; echo date('Y-m-d H:i'), "\n"; date_default_timezone_set('Europe/Stockholm'); echo date_default_timezone_get(), "\n"; echo date('Y-m-d H:i'), "\n"; date_default_timezone_set('UTC'); echo date_default_timezone_get(), "\n"; echo date('Y-m-d H:i'), "\n";

preferences:
42.56 ms | 402 KiB | 5 Q