+ */
+ const KEY_SUFFIX = ':2';
+
+ /**
+ * Constructor
+ *
+ * Available parameters are:
+ * - nativeSerialize: If true, pass objects to apc_store(), and trust it
+ * to serialize them correctly. If false, serialize
+ * all values in PHP.
+ *
+ * @param array $params
+ */
+ public function __construct( array $params = array() ) {
+ parent::__construct( $params );
+
+ if ( isset( $params['nativeSerialize'] ) ) {
+ $this->nativeSerialize = $params['nativeSerialize'];
+ } elseif ( extension_loaded( 'apcu' ) && ini_get( 'apc.serializer' ) === 'default' ) {
+ // APCu has a memory corruption bug when the serializer is set to 'default'.
+ // See T120267, and upstream bug reports:
+ // - https://github.com/krakjoe/apcu/issues/38
+ // - https://github.com/krakjoe/apcu/issues/35
+ // - https://github.com/krakjoe/apcu/issues/111
+ $this->logger->warning(
+ 'The APCu extension is loaded and the apc.serializer INI setting ' .
+ 'is set to "default". This can cause memory corruption! ' .
+ 'You should change apc.serializer to "php" instead. ' .
+ 'See <https://github.com/krakjoe/apcu/issues/38>.'
+ );
+ $this->nativeSerialize = false;
+ } else {
+ $this->nativeSerialize = true;
+ }
+ }