How to implement multi-threading in php

Multi-threading can be implemented in How to implement multi-threading in php, which uses the old exec function to achieve multi-threading through asynchronous processing. The exec function itself is a How to implement multi-threading in php function that executes external programs. Let's take a closer look at how to implement PHP multi-threading.

Recommended Manual: How to implement multi-threading in php complete self-study manual

Let’s first look at an example

<?How to implement multi-threading in php
 
class execMulti {
    function MultithreadTest {
        exec("How to implement multi-threading in php static_massive.How to implement multi-threading in php > /dev/null &");
 
        echo "处理完成了";
    }
}
?>

When the above operation is performed, the processing completion is displayed even before the time-consuming processing ends.

exec("How to implement multi-threading in php static_massive.How to implement multi-threading in php > /dev/null &");

Since the value returned by ">/dev/null&" is missing, we will not wait for a response.

Therefore, processing completion indication is faster than time-consuming processing.

However, this method does not know when the time-consuming processing will end.

Don’t forget to consider using log execution, logging in to DB and other methods to deliver execution results to users.

Methods for multi-threading (pthreads)

Finally, the method of using the PHP extension module pthreads is introduced.

It can be simpler than the above method using exec.

①Configure the environment and install How to implement multi-threading in php

Please use vagrant etc. to prepare your favorite environment.

How to implement multi-threading in php needs to use the thread-safe version, which is a multi-threaded and safe implementation.

Download the thread-safe version of PHP from the official website.

Access the content below and download from the red box in the picture.

http://www.How to implement multi-threading in php.net/downloads.How to implement multi-threading in php

Additionally, for thread-safe installation, you need to specify -enable- using the configure option maintainer-zts.

./configure --enable-maintainer-zts

You can also install Apache and mysql options as needed.

Just use the following command to confirm the How to implement multi-threading in php version.

How to implement multi-threading in php -v

②pthreads installation

Let’s download the zip format.

https://github.com/krakjoe/pthreads/archive/master.zip

Extract the zip, move to the unzipped file, and execute How to implement multi-threading in phpize.

If you are running pthreads on the PHP module list, you can do the following.

How to implement multi-threading in php -m

Depending on the environment, the settings in this area will be different. You can use the environment name pthreads, etc. to search to find information.

③ Try to use multi-threading

The example is as follows

<?How to implement multi-threading in php
class pthreadsTest extends Thread {
    public function run () {
        sleep(5);
    }
}
$ts1 = new pthreadsTest();
$ts1->start(); 
$ts2 = new pthreadsTest();
$ts2->start(); 
?>

Because sleep(5) is called twice, it takes 10 seconds, But actually it will be 5 seconds.

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