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run code in 200+ php & hhvm versions
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<?php echo date("First Saturday");
Output for 5.2.2 - 7.2.0
December07Fri, 20 Dec 2013 02:07:36 +01003631 tham31000000Fri, 20 Dec 2013 02:07:36 +010020am13
Output for 4.3.0 - 5.2.1
December07Fri, 20 Dec 2013 02:07:36 +01003631 tham31uFri, 20 Dec 2013 02:07:36 +010020am13