N°3169 - Add feature to connect Gsuite mail box with OAuth

N°2504 - Add feature to connect Office mail box with OAuth2 for Microsoft Graph
N°5102 - Allow to send emails (eg. notifications) using GSuite SMTP and OAuth
 * 2.7 migration (wip)

lib/laminas/laminas-stdlib/src/SplQueue.php

@@ -0,0 +1,54 @@
+<?php
+
+/**
+ * @see       https://github.com/laminas/laminas-stdlib for the canonical source repository
+ * @copyright https://github.com/laminas/laminas-stdlib/blob/master/COPYRIGHT.md
+ * @license   https://github.com/laminas/laminas-stdlib/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Laminas\Stdlib;
+
+use Serializable;
+
+/**
+ * Serializable version of SplQueue
+ */
+class SplQueue extends \SplQueue implements Serializable
+{
+    /**
+     * Return an array representing the queue
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        foreach ($this as $item) {
+            $array[] = $item;
+        }
+        return $array;
+    }
+
+    /**
+     * Serialize
+     *
+     * @return string
+     */
+    public function serialize()
+    {
+        return serialize($this->toArray());
+    }
+
+    /**
+     * Unserialize
+     *
+     * @param  string $data
+     * @return void
+     */
+    public function unserialize($data)
+    {
+        foreach (unserialize($data) as $item) {
+            $this->push($item);
+        }
+    }
+}