#!/bin/bash

usage(){
	echo -n
	fmt <<EOF
DESCRIPTION
	Flush the PHP-FPM opcache and the APCu user cache without reloading or resetting the PHP-FPM service.

USAGE
	reset-php-fpm-opcache POOL_NAME
EOF
	exit 1
}

if [ $# -eq 1 ]; then
	if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
		usage
	fi
fi

if [ $# -ne 1 ]; then
	usage
fi

# If this script is run by a user without sudo powers, they can be given for this command by creating a file in `sudoers.d` with:
#
#     MY_USERNAME ALL=(www-data) NOPASSWD: /usr/bin/env SCRIPT_FILENAME=/tmp/php-fpm-opcache-reset.php REQUEST_METHOD=GET cgi-fcgi -bind -connect *

echo '<?php opcache_reset();?>' > /tmp/php-fpm-opcache-reset.php
sudo --user=www-data env SCRIPT_FILENAME=/tmp/php-fpm-opcache-reset.php REQUEST_METHOD=GET cgi-fcgi -bind -connect "/run/php/$1.sock" &> /dev/null
rm /tmp/php-fpm-opcache-reset.php