3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(date('Y-m-d', strtotime('tuesday'))); var_dump(date('Y-m-d', strtotime('tuesday + 1 month'))); var_dump(date('Y-m-d', strtotime('friday'))); var_dump(date('Y-m-d', strtotime('friday + 1 month')));
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.8
string(10) "2018-01-30" string(10) "2018-03-02" string(10) "2018-02-02" string(10) "2018-03-02"

preferences:
156.89 ms | 403 KiB | 192 Q