In this article, you will learn how to open a pipe in PHP. The popen() function in PHP opens a pipe to the program specified by the command parameter. Remember, a pipe is two-way communication between two processes.
what is the syntax of the POPEN function in php?
popen(command, mode)| Parameter | Description |
|---|---|
| command | Required. Specifies the command to execute |
| mode | Required. Specifies the connection mode. Can be “r” (Read only) or “w” (Write only – opens and clears existing file or creates a new file) |
examples of the POPEN function
Example 1. In this example, we open a pipe to the program specified in the command parameter.
<?php
$file = popen("/bin/ls","r");
//some code to be executed
pclose($file);
?>
