From 962f975a6f5b0e4ed604d5b8c59d5dfca3f05e98 Mon Sep 17 00:00:00 2001
From: Till Klampaeckel <till@php.net>
Date: Mon, 16 Apr 2012 23:22:18 +0300
Subject: [PATCH] Use Memcache::replace() first instead of Memcache::set():
 http://docs.php.net/manual/en/memcache.replace.php#100023

---
 .../Session/Storage/Handler/MemcacheSessionHandler.php       | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
index 00488fd0d9..fe29832f70 100644
--- a/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
+++ b/src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcacheSessionHandler.php
@@ -117,7 +117,10 @@ class MemcacheSessionHandler implements \SessionHandlerInterface
      */
     public function write($sessionId, $data)
     {
-        return $this->memcache->set($this->prefix.$sessionId, $data, 0, $this->memcacheOptions['expiretime']);
+        if (!$this->memcache->replace($this->prefix.$sessionId, $data, 0, $this->memcacheOptions['expiretime'])) {
+            return $this->memcache->set($this->prefix.$sessionId, $data, 0, $this->memcacheOptions['expiretime']);
+        }
+        return true;
     }
 
     /**