new appraoch

pancake/system/vendor/spatie/once/src/functions.php

@@ -0,0 +1,33 @@
+<?php
+
+use Spatie\Once\Backtrace;
+use Spatie\Once\Cache;
+
+function once($callback)
+{
+    $trace = debug_backtrace(
+        DEBUG_BACKTRACE_PROVIDE_OBJECT, 2
+    );
+
+    $backtrace = new Backtrace($trace);
+
+    if ($backtrace->getFunctionName() === 'eval') {
+        return call_user_func($callback);
+    }
+
+    $object = $backtrace->getObject();
+
+    $hash = $backtrace->getHash();
+
+    if (! Cache::isEnabled()) {
+        return call_user_func($callback, $backtrace->getArguments());
+    }
+
+    if (! Cache::has($object, $hash)) {
+        $result = call_user_func($callback, $backtrace->getArguments());
+
+        Cache::set($object, $hash, $result);
+    }
+
+    return Cache::get($object, $hash);
+}