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zaru/gist:3225150

Created August 1, 2012 08:52
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日付の差を計算する
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gistfile1.aw
<?php
//日付の差を月単位で計算する（PHP>=5.3）
$date1 = new DateTime('2012-08-01');
$date2 = new DateTime('2013-02-24');
$interval = $date1->diff($date2);
$diffMonth = $interval->y * 12 + $interval->m;
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