Question

php计算两个日期相差多少天

Answer 1

<?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";