3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo ("`test_id`=1")AND("`user_id`=33"); echo "\n---\n"; echo ("`test_id`=1") && ("`user_id`=33"); echo "\n---\n"; echo ("duck") && ("quack");
Output for 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 - 7.3.30, 7.4.0 - 7.4.23, 8.0.0 - 8.0.10, 8.1rc1 - rc2
1 --- 1 --- 1

preferences:
115.6 ms | 460 KiB | 5 Q