php 时间区间

<?php
// 创建两个DateTime对象
$start_date = new DateTime('2023-01-01');
$end_date = new DateTime('2023-01-10');

// 计算两个日期之间的天数差
$interval = $start_date->diff($end_date);

echo "两个日期之间相差的天数: " . $interval->days;
?>

<?php
$start_date = new DateTime('2023-01-10');
$end_date = new DateTime('2023-01-01');

// 交换顺序以确保开始时间早于结束时间
if ($start_date > $end_date) {
    $temp = $start_date;
    $start_date = $end_date;
    $end_date = $temp;
}

$interval = $start_date->diff($end_date);

echo "两个日期之间相差的天数: " . $interval->days;
?>

<?php
// 创建DateTime对象并设置时区
$start_date = new DateTime('2023-01-01', new DateTimeZone('UTC'));
$end_date = new DateTime('2023-01-10', new DateTimeZone('Asia/Shanghai'));

// 计算两个日期之间的天数差
$interval = $start_date->diff($end_date);

echo "两个日期之间相差的天数: " . $interval->days;
?>