3v4l.org

run code in 300+ PHP versions simultaneously
<?php printf("PHP %d\n", defined('PHP_MAJOR_VERSION') ? PHP_MAJOR_VERSION : PHP_VERSION); if (false) { $a = 1; $b = array(); echo $a + $b; } echo "Finished\n";

preferences:
24.98 ms | 404 KiB | 5 Q