3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo strlen(md5(rand(), TRUE));
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 - 7.1.28, 7.2.0 - 7.2.18, 7.3.0 - 7.3.5
16

preferences:
163.19 ms | 403 KiB | 219 Q