How to implement multi-threading with PHP+shell

The example in this article describes the method of implementing multi-threading using PHP+shell. Share it with everyone for your reference. The details are as follows:

Here is how to implement multi-threading with the help of shell scripts.

First write a simple php code. In order to make the script execution time longer and see the effect more easily, sleep for a while, haha! First look at the code of test.php:

PHP code:

<?php
for ($i=0;$i<10;$i++) {
  echo $i;
  sleep(10);
}
?>

Look at the code of the shell script, it is very simple

#!/bin/bash
for i in 1 2 3 4 5 6 7 8 9 10
do
  /usr/bin/php -q /var/www/html/test.php &
done

Did you notice that there is an & symbol in the line that requests the PHP code? This is the key, no If added, multi-threading cannot be performed. & means that the service is pushed to the background for execution. Therefore, in each loop of the shell, it is not necessary to wait for all the PHP code to be executed before requesting the next file, but at the same time, so that Multi-threading has been achieved. Run the shell below to see the effect. Here you will see 10 test.php processes running again, and then use the Linux timer to request this shell regularly to process some tasks that require multi-threading, for example, Very easy to use when downloading in batches!

I hope this article will be helpful to everyone’s PHP programming design.

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