You can change PHP settings for your apps by creating a file named .user.ini in your app's web root directory.
apps/APPNAME/public/.user.ini
Using a .user.ini file is the best and safest way to customize PHP settings for an app. Unlike modifying global configuration files, using a .user.ini file can't break your server and does not require you to restart PHP.
Each line in your .user.ini file should have the format:
key = value
For example, to disable the PHP memory_limit for your app, you'd add the following line to your .user.ini file:
memory_limit = -1
If you've used older hosting where you changed PHP settings through the Apache .htaccess file using the php_flag and php_value directives, you should forget those old habits now. Configuring PHP through .htaccess files does not work when PHP runs through FastCGI via PHP-FPM, such as when using ServerPilot.
To confirm your customizations to your app's .user.ini file are correct, you can create a PHP script that contains only the following line:
<?php phpinfo(); ?>
and then request that file through your browser. You should see the "Local value" for your modified setting showing the value you've set in your .user.ini file.