3v4l.org

run code in 300+ PHP versions simultaneously
<?php if (0 == '0foo') { echo "foo1"; // always false with >= PHP 8 } if (0 === '0foo') { echo "foo2"; // always false } if ('0foo' != 1) { echo "foo3"; // always true }
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
foo3
Output for 7.4.0 - 7.4.33
foo1foo3
preferences:
117.93 ms | 401 KiB | 121 Q