Cleaner boot script.

boot.php

@@ -2,13 +2,20 @@
 
 use RedBeanPHP\R;
 
-require_once __DIR__ . '/vendor/autoload.php';
-
-function c($param = null, $default = null)
+/**
+ * Helper to get config values.
+ *
+ * @param null|string $param
+ * @param null|mixed  $default
+ *
+ * @return mixed|null
+ */
+function c(string $param = null, $default = null)
 {
     static $config;
     if ($config === null) {
         $config = require __DIR__ . '/config.php';
+        is_array($config) || die('Invalid config format.');
     }
 
     if ($param === null) {
@@ -24,7 +31,19 @@ function c($param = null, $default = null)
 
 define('PODUPTIME', microtime(true));
 
+require_once __DIR__ . '/vendor/autoload.php';
+
 // Set up global DB connection.
-R::setup('pgsql:host=' . c('pghost') . ';dbname=' . c('pgdb'), c('pguser'), c('pgpass'), true);
+R::setup(
+    sprintf(
+        'pgsql:host=%s;port=%d;dbname=%s',
+        c('pghost'),
+        c('pgport', 5432),
+        c('pgdb')
+    ),
+    c('pguser'),
+    c('pgpass'),
+    true
+);
 R::testConnection() || die('Error in DB connection');
 R::usePartialBeans(true);