date_sub

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

date_sub — 别名 DateTime::sub()

说明

此函数是该函数的别名： DateTime::sub()

add a note

User Contributed Notes 4 notes

down

vitkor dot kruglikov at gmail dot com ¶

7 years ago


It can be unclear for someone how to use this function.
Here is the example:

$date=date_create("2013-03-15");
date_sub($date,date_interval_create_from_date_string("40 days"));
echo date_format($date,"Y-m-d");

down

fpradove at gmail dot com ¶

4 years ago


In version 5.6.31 the variable $ today is passed by reference in the function date_sub () and the interval is also applied

<?php 
$today = date_create(date('Y-m-d'));
$yesterday = date_sub($today, date_interval_create_from_date_string("1 days"));

        echo var_dump($today);
        echo var_dump($yesterday)
?>

down

-2

Thomas LEDUC ¶

7 years ago


To glue to the OOP, it's better to use it with DateInterval::createFromDateString

<?php 
$dateB = new DateTime('2020-12-20'); 
$dateA = $dateB->sub(DateInterval::createFromDateString('10 days'));
?>

more detail here :
<?php
public static function createFromDateString ($time) {}
?>

down

-4

Jonathan Poissant ¶

11 years ago


You cannot replace date_sub('2000-01-20') by DateTime::sub('2000-01-20') because DateTime::sub is not static. You have to create the DateTime object first.


Example:


<?php $dateA = date_sub('2000-01-20', date_interval_create_from_date_string('10 days')); ?>



will be replace by

<?php

$dateB = new DateTime('2000-01-20');

$dateA = $dateB->sub(date_interval_create_from_date_string('10 days'));

?>

add a note

官方地址：https://www.php.net/manual/en/function.date-sub.php

有任何技术问题请点击这里网站运营推广招聘

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络数据库 JAVA 面试 NoSQL C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

php7 安装fileinfo扩展 preg_split — 通过一个正则表达式分隔字符串 php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题 [PHP] inet_pton/inet_ntop IP地址转换函数 [鸟哥]PHP_INT_MIN 和 -9223372036854775808 PHP 8.1 adodb手册 ADORecordSet对象 opcache预加载 Composer的Packagist资源 array_multisort() 多字段排序 PHPMailer设置utf8 PHPMailer字符集CharSet PHP json解析（json_decode）页面工具 mysql面试题 [原创]诡异的php-fpm超时问题 php中几种注释规范支持php7的性能采集扩展纯php实现DES以及TripleDES加密算法 php 修改图片大小 PHP mkdir()写出来的权限与mode值不符合

略微加速

PHP官方手册 - 互联网笔记

date_sub

说明

User Contributed Notes 4 notes