在php中查找日期差异

我想知道怎样才能找出两次约会的区别。我从表格中得到起始日期和结束日期。现在我想找出当前日期与开始日期或结束日期的差异

echo $startDate = $startYear.'-'.$startMonth.'-'.$startDay.'<br>';
echo $endDate = $endYear.'-'.$endMonth.'-'.$endDay;
$_SESSION['startDate'] = $startDate;
$_SESSION['endDate'] = $endDate;
$_SESSION['team'] = $team;
header('location:test.php');

试试这个

$date1=strtotime("2016-07-02");
$date2=strtotime(date('Y/m/d'));
$diff = $date2 - $date1;
echo ($diff / (60 * 60 * 24)) . ' days';

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可能是7年前的重复，php版本太旧了。

$date1=strtotime("2016-07-02");
$date2=strtotime(date('Y/m/d'));
$diff = $date2 - $date1;
echo ($diff / (60 * 60 * 24)) . ' days';