php时间日期类相关的对象DateTime

<?php
$dateTime = new DateTime('2024-07-19 12:00:00');

// 获取时间戳
$timestamp = $dateTime->getTimestamp();
echo $timestamp;

// 计算时间差
//$dateTime1 = new DateTime('2024-07-19 12:00:00');
//$dateTime2 = new DateTime('2024-07-22 00:00:00');
//$diff = $dateTime1->diff($dateTime2);
//echo $diff->format("%R %m %d %H %i %s");

// 增加或减少的时间间隔
//$dateTime->modify('+1 day');

//设置日期
//$dateTime->setDate(2024, 07, 22);
//设置时区
//$dateTime->setTime(0, 0, 0);
//设置时区
//$dateTime->setTimezone(new DateTimeZone('Asia/Shanghai'));
// 将日期时间格式化位指定的字符串格式
//echo $dateTime->format('Y-m-d H:i:s');

//获取时区
//$dataTimeZone = $dateTime->getTimezone();
//print_r($dataTimeZone->getName());
//print_r($dataTimeZone->getLocation());