您可以选择:

multi_curl 可以使用系统命令来实现相同的功能 理想的情况是，用C语言创建一个线程函数，然后用PHP编译/配置。这个函数是PHP的函数。

您可以使用exec()来运行命令行脚本(例如命令行php)，如果您将输出管道到一个文件，那么您的脚本将不会等待命令完成。

我不太记得php CLI的语法，但你会想要这样的东西:

exec("/path/to/php -f '/path/to/file.php' | '/path/to/output.txt'");

我认为相当多的共享托管服务器出于安全原因默认禁用了exec()，但可能值得一试。

您可以选择:

multi_curl 可以使用系统命令来实现相同的功能 理想的情况是，用C语言创建一个线程函数，然后用PHP编译/配置。这个函数是PHP的函数。

As of the writing of my current comment, I don't know about the PHP threads. I came to look for the answer here myself, but one workaround is that the PHP program that receives the request from the web server delegates the whole answer formulation to a console application that stores its output, the answer to the request, to a binary file and the PHP program that launched the console application returns that binary file byte-by-byte as the answer to the received request. The console application can be written in any programming language that runs on the server, including those that have proper threading support, including C++ programs that use OpenMP.

一个不可靠的，肮脏的技巧是使用PHP来执行控制台应用程序，"uname"，

uname -a

and print the output of that console command to the HTML output to find out the exact version of the server software. Then install the exact same version of the software to a VirtualBox instance, compile/assemble whatever fully self-contained, preferably static, binaries that one wants and then upload those to the server. From that point onwards the PHP application can use those binaries in the role of the console application that has proper multi-threading. It's a dirty, unreliable, workaround to a situation, when the server administrator has not installed all needed programming language implementations to the server. The thing to watch out for is that at every request that the PHP application receives the console application(s) terminates/exit/get_killed.

As to what the hosting service administrators think of such server usage patterns, I guess it boils down to culture. In Northern Europe the service provider HAS TO DELIVER WHAT WAS ADVERTISED and if execution of console commands was allowed and uploading of non-malware files was allowed and the service provider has a right to kill any server process after a few minutes or even after 30 seconds, then the hosting service administrators lack any arguments for forming a proper complaint. In United States and Western Europe the situation/culture is very different and I believe that there's a great chance that in U.S. and/or Western Europe the hosting service provider will refuse to serve hosting service clients that use the above described trick. That's just my guess, given my personal experience with U.S. hosting services and given what I have heard from others about Western European hosting services. As of the writing of my current comment(2018_09_01) I do not know anything about the cultural norms of the Southern-European hosting service providers, Southern-European network administrators.

那么pcntl_fork呢?

检查我们的手册页的例子:PHP pcntl_fork

<?php

    $pid = pcntl_fork();
    if ($pid == -1) {
        die('could not fork');
    } else if ($pid) {
        // we are the parent
        pcntl_wait($status); //Protect against Zombie children
    } else {
        // we are the child
    }

?>

多线程意味着同时执行多个任务或进程，我们可以通过使用以下代码在php中实现这一点，尽管在php中没有直接的方法来实现多线程，但我们可以通过以下方法实现几乎相同的结果。

chdir(dirname(__FILE__));  //if you want to run this file as cron job
 for ($i = 0; $i < 2; $i += 1){
 exec("php test_1.php $i > test.txt &");
 //this will execute test_1.php and will leave this process executing in the background and will go         

 //to next iteration of the loop immediately without waiting the completion of the script in the   

 //test_1.php , $i  is passed as argument .

}

Test_1.php

$conn=mysql_connect($host,$user,$pass);
$db=mysql_select_db($db);
$i = $argv[1];  //this is the argument passed from index.php file
for($j = 0;$j<5000; $j ++)
{
mysql_query("insert  into  test   set

                id='$i',

                comment='test',

                datetime=NOW() ");

}

这将同时执行test_1.php两次，两个进程将同时在后台运行，因此通过这种方式，您可以在php中实现多线程。

这个人在php多线程方面做得很好