3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo max(floor((strtotime('2017-07-12') - time()) / 86400), 1);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0 - 7.3.1
4
preferences:
76.69 ms | 402 KiB | 53 Q