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如何使用 PHP 查找两个日期之间的天数？

$now = time(); // or your date as well
$your_date = strtotime("2010-01-31");
$datediff = $now - $your_date;

echo round($datediff / (60 * 60 * 24));

如果您使用的是PHP 5.3 > ，则这是迄今为止计算差异的最准确方法：

$earlier = new DateTime("2010-07-06");
$later = new DateTime("2010-07-09");

$diff = $later->diff($earlier)->format("%a");

从 PHP 版本 5.3 起，添加了新的日期 / 时间函数以实现不同：

$datetime1 = new DateTime("2010-06-20");

$datetime2 = new DateTime("2011-06-22");

$difference = $datetime1->diff($datetime2);

echo 'Difference: '.$difference->y.' years, ' 
                   .$difference->m.' months, ' 
                   .$difference->d.' days';

print_r($difference);

结果如下：

Difference: 1 years, 0 months, 2 days

DateInterval Object
(
    [y] => 1
    [m] => 0
    [d] => 2
    [h] => 0
    [i] => 0
    [s] => 0
    [invert] => 0
    [days] => 367
)

希望能帮助到你 ！