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run code in 300+ PHP versions simultaneously
<?php var_dump(date("cc",strtotime("first day previous month"))); var_dump(date('Y-m-d', strtotime(date('Y-m-01').' -1 MONTH')));
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.10, 5.2.12 - 5.2.17, 5.3.3 - 5.3.29, 5.4.0 - 5.4.2, 5.4.4 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(50) "2014-03-04T10:40:10+01:002014-03-04T10:40:10+01:00" string(10) "2014-02-01"
Output for 7.3.32 - 7.3.33, 8.0.13
string(50) "2014-03-04T08:40:10+00:002014-03-04T08:40:10+00:00" string(10) "2014-02-01"
Output for 5.2.11, 5.4.3
string(50) "2014-03-04T10:40:11+01:002014-03-04T10:40:11+01:00" string(10) "2014-02-01"
Output for 5.3.0 - 5.3.2
string(50) "2014-02-01T10:40:10+01:002014-02-01T10:40:10+01:00" string(10) "2014-02-01"
Output for 5.0.0 - 5.0.5
string(50) "1970-01-01T00:59:59+01:001970-01-01T00:59:59+01:00" string(10) "2014-02-01"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
string(2) "cc" string(10) "2014-02-01"

preferences:
238.49 ms | 402 KiB | 425 Q