Moves config loading to ConfigLoader core class

app/core/ConfigLoader.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Core;
+
+class ConfigLoader
+{
+    /**
+     * Load configuration array from a set of possible file locations.
+     *
+     * @param string[] $locations
+     * @return array
+     */
+    public static function loadConfig(array $locations): array
+    {
+        $configFile = null;
+        foreach ($locations as $location) {
+            if (file_exists($location)) {
+                $configFile = $location;
+                break;
+            }
+        }
+        if (!$configFile) {
+            die('Config file not found');
+        }
+        return require $configFile;
+    }
+}

public_html/index.php

@@ -111,29 +111,16 @@ $allowed_urls = [
 // Let plugins filter/extend allowed_urls
 $allowed_urls = filter_allowed_urls($allowed_urls);
 
-// cnfig file
-// possible locations, in order of preference
-$config_file_locations = [
+require_once __DIR__ . '/../app/core/ConfigLoader.php';
+use App\Core\ConfigLoader;
+
+// Load configuration
+$config = ConfigLoader::loadConfig([
     __DIR__ . '/../app/config/jilo-web.conf.php',
     __DIR__ . '/../jilo-web.conf.php',
     '/srv/jilo-web/jilo-web.conf.php',
-    '/opt/jilo-web/jilo-web.conf.php'
-];
-$config_file = null;
-// try to find the config file
-foreach ($config_file_locations as $location) {
-    if (file_exists($location)) {
-        $config_file = $location;
-        break;
-    }
-}
-// if found, use it
-if ($config_file) {
-    $localConfigPath = str_replace(__DIR__ . '/..', '', $config_file);
-    $config = require $config_file;
-} else {
-    die('Config file not found');
-}
+    '/opt/jilo-web/jilo-web.conf.php',
+]);
 
 $app_root = $config['folder'];