3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = date("Y-m-d"); $firstday = date("Y-m-01",strtotime($date)); //取得指定时间所属月的最后一天 $lastday = date("Y-m-d",strtotime("$firstday +1 month -1 day")); echo $lastday ;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.6 - 7.2.33, 7.3.0 - 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
2014-10-31

preferences:
226.91 ms | 406 KiB | 380 Q