diff --git a/src/admin/prefs.common.php b/src/admin/prefs.common.php
index 4b7c019..6aee78f 100644
--- a/src/admin/prefs.common.php
+++ b/src/admin/prefs.common.php
@@ -192,7 +192,12 @@ else if($_REQUEST['action'] == 'caching')
 
 	// assign
 	$bm_prefs['memcache_servers'] = str_replace(';', "\n", $bm_prefs['memcache_servers']);
-	$tpl->assign('memcache', class_exists('Memcache') || class_exists('Memcached'));
+	if((int)str_replace('.', '', phpversion()) >= 800) { // In PHP 8 we will disable memcached
+		$tpl->assign('memcache', false);
+	}
+	else {
+		$tpl->assign('memcache', class_exists('Memcache') || class_exists('Memcached'));
+	}
 	$tpl->assign('page', 'prefs.caching.tpl');
 }
 
diff --git a/src/serverlib/cache.class.php b/src/serverlib/cache.class.php
index e102e55..d6fbf77 100644
--- a/src/serverlib/cache.class.php
+++ b/src/serverlib/cache.class.php
@@ -353,7 +353,13 @@ class BMCache_memcache extends BMCache
 		$memcacheServers = explode(';', $bm_prefs['memcache_servers']);
 		if(class_exists('Memcache') || class_exists('Memcached'))
 		{
-			if(count($memcacheServers) > 0 && trim($memcacheServers[0]) != '')
+			if((int)str_replace('.', '', phpversion()) >= 800) { // In PHP 8 we will disable memcached
+				PutLog('PHP 8 or higher detected. memcache is disabled. Please choose an other cache method or contribute your code changes to the community.',
+						PRIO_WARNING,
+						__FILE__,
+						__LINE__);
+			}
+			else if(count($memcacheServers) > 0 && trim($memcacheServers[0]) != '')
 			{
 				if(class_exists('Memcache'))
 				{