不使用 CRON 调度脚本 [英] Schedule scripts without using CRON

问题描述

我知道有很多关于使用 CRON 运行 php 文件的帖子.但是，在共享托管的世界中，并且易于用户设置，我不想搞砸.

I know there are many posts about using CRON to run a php file. But, in the world of shared hosting, and ease of setup for a user, I don't want to have to mess with that.

我在网上找到了另一个与套接字有关的解决方案.只是想让每个人都接受这个，并告诉我这是一个好主意还是坏主意.听起来效果不错.

I found another solution online that has to do with sockets. Just wanted to get everyones take on this, and tell me if this is a good or bad idea. Sounds like it works well.

想法?

//Open socket connection to cron.php
$socketcon = fsockopen($_SERVER['HTTP_HOST'],80,$errorno,$errorstr,10);
if($socketcon) {
$socketdata = "GET /cron.php HTTP 1.1
Host: ".$_SERVER['HTTP_HOST']."
Connection: Close

";
fwrite($socketcon,$socketdata);
//Normally you would get all the data back with fgets and wait until $socketcon reaches feof.
//In this case, we just do this:
fclose($socketcon);
} else {
//something went wrong. Put your error handler here.
}

cron.php:

//This script does all the work.
sleep(200);
//To prove that this works we will create an empty file here, after the sleep is done.
//Make sure that the webserver can write in the directory you're testing this file in.
$handle = fopen('test.txt','w');
fclose($handle);

从博客文章中找到脚本:http://syn.ac/tech/13/creating-php-cronjobs-without-cron-and-php-cli/

Found the script from a blog post: http://syn.ac/tech/13/creating-php-cronjobs-without-cron-and-php-cli/

推荐答案

这不是一个糟糕的方法，但您需要确保通过关闭套接字它不仅仅是在脚本完成之前终止脚本.您可以将套接字设置为非阻塞.

It's not a bad method, but you need to ensure that by closing the socket it isn't just terminating the script before it finishes. You can set sockets to non-blocking.

我仍然会使用 cron 作业，即使它有点痛苦.

I would still use a cron job, even if it is a bit of a pain.

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