From e6836163298c49bd8430f6f2a93200099afed6ea Mon Sep 17 00:00:00 2001
From: mark_story <mark@mark-story.com>
Date: Fri, 20 Jun 2014 13:55:26 -0400
Subject: [PATCH] Apply patch from 'biesbjerg' to ApcEngine

This set of changes allows ApcEngine to work with APCu and newer
versions of APC.

Fixes #3749
---
 lib/Cake/Cache/Engine/ApcEngine.php | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/lib/Cake/Cache/Engine/ApcEngine.php b/lib/Cake/Cache/Engine/ApcEngine.php
index a06fbd3f7..7fa644b24 100644
--- a/lib/Cake/Cache/Engine/ApcEngine.php
+++ b/lib/Cake/Cache/Engine/ApcEngine.php
@@ -125,12 +125,19 @@ class ApcEngine extends CacheEngine {
 		if ($check) {
 			return true;
 		}
-		$info = apc_cache_info('user');
-		$cacheKeys = $info['cache_list'];
-		unset($info);
-		foreach ($cacheKeys as $key) {
-			if (strpos($key['info'], $this->settings['prefix']) === 0) {
-				apc_delete($key['info']);
+		if (class_exists('APCIterator')) {
+			$iterator = new APCIterator(
+				'user',
+				'/^' . preg_quote($this->settings['prefix'], '/') . '/',
+				APC_ITER_NONE
+			);
+			apc_delete($iterator);
+		} else {
+			$cache = apc_cache_info('user');
+			foreach ($cache['cache_list'] as $key) {
+				if (strpos($key['info'], $this->settings['prefix']) === 0) {
+					apc_delete($key['info']);
+				}
 			}
 		}
 		return true;