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<?php $dt = new \DateTime('2014-01-31'); $dt->setDate(null, 2, null); echo $dt->format('Y-m-d');
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: DateTime::setDate(): Passing null to parameter #1 ($year) of type int is deprecated in /in/qHuFB on line 3 Deprecated: DateTime::setDate(): Passing null to parameter #3 ($day) of type int is deprecated in /in/qHuFB on line 3 0000-01-31

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