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shigemk2/date_interval.php

Created February 23, 2013 17:11
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DateIntervalを使ってみよう
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date_interval.php
<?php
$date = new DateTime('2000-01-20');
$date->sub(new DateInterval('P12M')); // 12ヶ月前
echo $date->format('Y-m-d') . "\n"; // 1999-01-20
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