How to Enable proc_open() in php.ini

The error proc_open() has been disabled for security reasons occurs when the PHP function proc_open is disabled in the server configuration (php.ini). Many hosting providers disable this function for security reasons to prevent unauthorized command execution.

What is the proc_open() Error

The proc_open() function allows PHP scripts to launch external processes and interact with them through input/output pipes. It is commonly used:

• In build systems (Composer, npm)
• When working with version control systems
• For executing system commands from PHP
• In some frameworks and CMS

Check If proc_open() Is Disabled

Execute the following command to check disabled PHP functions:

Expected output (if proc_open is disabled):

If proc_open appears in the list, PHP is blocking this function.

Enable proc_open() in php.ini

1. Find the php.ini File

Execute the command:

Example output:

Your php.ini file may be located in different directories depending on the setup:

• For Apache: /etc/php/8.1/apache2/php.ini
• For Nginx with PHP-FPM: /etc/php/8.1/fpm/php.ini
• For CLI: /etc/php/8.1/cli/php.ini

2. Edit php.ini

Open the correct php.ini file using a text editor:

Find the line:

Remove proc_open and proc_close if they are present in the list:

Save and exit (CTRL + X, then Y, then Enter).

3. Restart Apache or PHP-FPM

For Apache:

For Nginx with PHP-FPM:

Now proc_open() should be enabled!

4. Verify proc_open() is Enabled

Execute:

Expected output (if proc_open() is enabled):

If proc_open no longer appears in the list, the function is enabled!

Alternative: Enable proc_open() in .user.ini (Shared Hosting)

If you don't have root access, try adding this to the .user.ini file in the root folder of your site:

This will remove all disabled functions, but only works if your hosting provider allows overrides via .user.ini.

Troubleshooting

Summary

Now proc_open() should be enabled and working!