3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start_time=strtotime("-15 day");//10天前 echo $start_time; $start_time==strtotime(date('Y-m-d', $start_time)); echo $start_time;
Output for 5.6.28, 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
14434297401443429740
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.23, 7.0.0 - 7.0.8
14434297011443429701
preferences:
224.02 ms | 402 KiB | 265 Q