PHP-FPM status wrapper for each serverpilot web apps

stats.php

<?php
/**
 * Serverpilot PHP-FPM Status wrapper for all apps
 * Install required package:
 * $ sudo apt install libfcgi-bin
 *
 * Add .htaccess:
 * RewriteRule ^php\-stats/ stats.php [NC,L]
 *
 * Place this script on 'default' web app.
 * Usage URL:
 * localhost/php-stats/app-name/status
 * localhost/php-stats/app-name/ping
 **/
error_reporting(0);
$paths = explode('/', trim($_SERVER['REQUEST_URI'], '/\\\'"') );
$app = preg_replace('/[^a-z\-]/', '-', @$paths[1]);
$path= 'status';
// Keep stupid to make it safe
if(@$paths[2] == 'ping')
{
	$path = 'ping';
}
$param = [];
$param['QUERY_STRING'] = $_SERVER['QUERY_STRING'];
$param['SCRIPT_NAME'] = '/php-fpm-' . $path;
$param['SCRIPT_FILENAME'] = '/php-fpm-' . $path;
$param['REQUEST_METHOD'] = 'GET';

$socket_file = "/srv/users/serverpilot/run/$app.php-fpm.sock";
$output = [];
$retval = null;
$cmd = "";

if(!file_exists($socket_file))
{
	die('Invalid path');
}

foreach ($param as $key => $value) {
	$cmd .= "$key=" . escapeshellarg($value) . ' ';
}

$cmd .= "cgi-fcgi -bind -connect '$socket_file'";
//echo "$cmd\n";

exec($cmd, $output, $retval);
$is_header=true;
foreach ($output as $val)
{
	if(empty($val) && $is_header)
	{
		$is_header = false;
	}elseif( $is_header )
	{
		header($val);
	}else{
		echo "$val\r\n";
	}
}