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<?php $d30= strtotime("2017-06-30"); Echo $d30 ."\n"; Echo date("Y-m-d", $d30)."\n\n"; $d31= strtotime("2017-06-31"); Echo $d31 ."\n"; Echo date("Y-m-d", $d31)."\n\n"; $d32= strtotime("2017-06-32"); Echo $d32 ."\n"; Echo date("Y-m-d", $d32)."\n\n";

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