PHP定时任务延缓执行的实现,php延缓
PHP定时任务延缓执行的实现,php延缓
复制代码 代码如下:
/*
|---------------------------
|PHP定时任务
|@黑眼诗人
|---------------------------
*/
ignore_user_abort(true); //客户端断开时忽略脚本中止(允许脚本一直执行)
set_time_limit(0); //设置脚本最长执行时间,0不限制
do{
$fp = fopen('auto.txt', 'w');
if($fp)
{
$text = '你好\n\r';
$count = 0;
for($i=1; $i
{
if(! $c = fwrite($fp, '第'.$i.'行:'.$text)) //返回写入字符数,失败时返回false
{
echo '第'.$i.'次的写入失败!';
}
$count += $i;
}
}
fclose($fp);
sleep(60); //延缓60秒执行
}while(true);
如果要用PHP文件的话,勉强可以做到
php里有一个sleep函数,具体使用是sleep(time)这里的time是以秒为单位
首先,建立php脚本
while(1){
//yourcode
sleep(3600*24);
}
?>
这里的yourcode就是你要PHP脚本执行的功能,虽然能达到这个目的,但是也有牺牲,你要在早上8点的时候通过URL访问这个脚本,也就是说执行PHP文件,并且,这个链接不能中断,要一直持续!!不然就无效了
PHP是单请求单执行,要有请求才执行的。
php是需要触发执行的, 没办法长期保持执行着它, 即便你用sleep, 它仍然是需要你首先去点它一次, 它才会一直存在
方法是用计划任务, 没错就是计划任务, 无论windows/*nix都有计划任务, 你可以把php放进计划任务里, 用命令行方式执行php程序
事实上没有任何可能性在0访问的情况下让php执行, 因为php自身就是服务器端脚本解释工具, 服务器当然是有人访问才工作才对, 楼主在反其道而行, 如果你希望用php执行桌面程序, 也不是没有办法,php官方就有这种工具, 但是和php的运行方式有太多不同,所以控制方式也都不同,严格的说,只是php的语法而已
对于提问者补充的补充:
ignore_user_abort(1);
set_time_limit(0);楼主要研究下这两个

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.
