From 04b99f53fccdca41a135b139da1c9aeef7a26e89 Mon Sep 17 00:00:00 2001
From: Svetlin Nakov <nakov@users.noreply.github.com>
Date: Thu, 14 Nov 2019 10:50:34 +0200
Subject: [PATCH] Fixed incompatibility with PHP 7.2+

See detailed bug description here: https://wordpress.org/support/topic/hyper-cache-extended-not-compatible-with-php-7-2
---
 cache.php | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/cache.php b/cache.php
index aaf25a8..54c2522 100755
--- a/cache.php
+++ b/cache.php
@@ -384,12 +384,15 @@ function hyper_mobile_type() {
 		return '';
 
 	$hyper_agent = strtolower($_SERVER['HTTP_USER_AGENT']);
-	foreach ($hyper_cache['mobile_agents'] as $hyper_a) {
-		if (strpos($hyper_agent, $hyper_a) !== false) {
-			if (strpos($hyper_agent, 'iphone') || strpos($hyper_agent, 'ipod')) {
-				return 'iphone';
-			} else {
-				return 'pda';
+	$mobile_agents = $hyper_cache['mobile_agents'];
+	if (is_array($mobile_agents) || is_object($mobile_agents)) {
+		foreach ($mobile_agents as $hyper_a) {
+			if (strpos($hyper_agent, $hyper_a) !== false) {
+				if (strpos($hyper_agent, 'iphone') || strpos($hyper_agent, 'ipod')) {
+					return 'iphone';
+				} else {
+					return 'pda';
+				}
 			}
 		}
 	}