php计算两个日期相差天数的方法,php日期相差天数
本文实例讲述了php计算两个日期相差天数的方法。分享给大家供大家参考。具体实现方法如下:
<?php /** * 求两个日期之间相差的天数 * (针对1970年1月1日之后,求之前可以采用泰勒公式) * @param string $day1 * @param string $day2 * @return number */ function diffBetweenTwoDays ($day1, $day2) { $second1 = strtotime($day1); $second2 = strtotime($day2); if ($second1 < $second2) { $tmp = $second2; $second2 = $second1; $second1 = $tmp; } return ($second1 - $second2) / 86400; } $day1 = "2013-07-27"; $day2 = "2013-08-04"; $diff = diffBetweenTwoDays($day1, $day2); echo $diff."\n";
希望本文所述对大家的php程序设计有所帮助。

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