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<?php var_dump(date('r', strtotime('next saturday', strtotime('2014-02-28 - 4 days')))); var_dump(date('r', strtotime('next saturday', strtotime('2014-03-1 - 4 days'))));
Output for 5.1.2 - 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 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 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 - 8.3.7
string(31) "Sat, 01 Mar 2014 00:00:00 +0100" string(31) "Sat, 01 Mar 2014 00:00:00 +0100"
Output for 7.3.32 - 7.3.33, 8.0.13
string(31) "Sat, 01 Mar 2014 00:00:00 +0000" string(31) "Sat, 01 Mar 2014 00:00:00 +0000"
Output for 5.1.0 - 5.1.1
string(31) "Thu, 01 Jan 1970 01:00:00 +0100" string(31) "Thu, 01 Jan 1970 01:00:00 +0100"
Output for 4.4.0 - 4.4.9, 5.0.5
string(31) "Sat, 08 Mar 2014 00:00:00 +0100" string(31) "Sat, 08 Mar 2014 00:00:00 +0100"
Output for 4.3.0 - 4.3.11, 5.0.0 - 5.0.4
string(31) "Sat, 15 Mar 2014 00:00:00 +0100" string(31) "Sat, 15 Mar 2014 00:00:00 +0100"

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