--- library/Zend/Cache/Core.php	(révision 23617)
+++ library/Zend/Cache/Core.php	(copie de travail)
@@ -345,12 +345,13 @@
         if (!$this->_options['caching']) {
             return true;
         }
-        if ($id === null) {
-            $id = $this->_lastId;
+	$cached_id = $id;
+        if ($cached_id === null) {
+            $cached_id = $this->_lastId;
         } else {
-            $id = $this->_id($id);
+            $cached_id = $this->_id($cached_id);
         }
-        self::_validateIdOrTag($id);
+        self::_validateIdOrTag($cached_id);
         self::_validateTagsArray($tags);
         if ($this->_options['automatic_serialization']) {
             // we need to serialize datas before storing them
@@ -385,9 +386,9 @@
             $abort = ignore_user_abort(true);
         }
         if (($this->_extendedBackend) && ($this->_backendCapabilities['priority'])) {
-            $result = $this->_backend->save($data, $id, $tags, $specificLifetime, $priority);
+            $result = $this->_backend->save($data, $cached_id, $tags, $specificLifetime, $priority);
         } else {
-            $result = $this->_backend->save($data, $id, $tags, $specificLifetime);
+            $result = $this->_backend->save($data, $cached_id, $tags, $specificLifetime);
         }
         if ($this->_options['ignore_user_abort']) {
             ignore_user_abort($abort);
@@ -401,10 +402,10 @@
             return false;
         }
         if ($this->_options['write_control']) {
-            $data2 = $this->_backend->load($id, true);
+            $data2 = $this->_backend->load($cached_id, true);
             if ($data!=$data2) {
                 $this->_log('Zend_Cache_Core::save() / write_control : written and read data do not match');
-                $this->_backend->remove($id);
+                $this->_backend->remove($cached_id);
                 return false;
             }
         }