Initial commit

inc/traits/Singleton.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * Cecha singleton
+ *
+ * @link https://krzysztof-turek.com
+ *
+ * @package tylkofotografia.pl
+ * @version 0.2
+ */
+
+trait Singleton {
+    private static $instances = [];
+
+    protected function __construct() { }
+
+    final protected function __clone() { }
+
+    public static function getInstance() {
+        
+        $class = get_called_class();
+
+        if ( !isset( $instances[$class])) {
+            $instances[$class] = new $class;
+        }
+        return $instances[$class];
+    }
+}