1 files changed, 18 insertions, 0 deletions
diff --git a/WpfTest/Singleton.php b/WpfTest/Singleton.php
new file mode 100644
index 0000000..b365e1e
--- /dev/null
+++ b/WpfTest/Singleton.php
@@ -0,0 +1,18 @@
+<?php
+namespace WpfTest;
+
+abstract class Singleton {
+    private static array $instances;
+    protected function __construct() {
+    }
+    /**
+     * @return static the singleton instance
+     */
+    public static function getInstance() {
+        if (!isset(self::$instances[static::class])) {
+            //error_log('making a new ' . static::class);
+            self::$instances[static::class] = new static();
+        }
+        return self::$instances[static::class];
+    }
+}
+\ No newline at end of file