我想找出这两次约会的时间、小时和分钟的区别

从PHP版本>5添加新的日期/时间函数以获得差异：

$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
)

我不确定我是否答对了你的问题，但下面的问题不应该奏效吗？

$datetime1 = new DateTime('27-09-2014');
$datetime2 = new DateTime('29-09-2014');
$datetime1->setTime(05, 00);
$datetime2->setTime(15, 00);

$interval = date_diff($datetime1, $datetime2);
echo $interval->format('%a Day and %h hours'

日期时间：：diff