Merge pull request #45282 from nextcloud/backport/45242/stable28

[stable28] fix(setupCheck): Only warn when memcache present w/o memcached

apps/settings/lib/SetupChecks/MemcacheConfigured.php

@@ -53,15 +53,16 @@ class MemcacheConfigured implements ISetupCheck {
 		$memcacheLocalClass = $this->config->getSystemValue('memcache.local', null);
 		$caches = array_filter([$memcacheDistributedClass,$memcacheLockingClass,$memcacheLocalClass]);
 		if (in_array(\OC\Memcache\Memcached::class, array_map(fn (string $class) => ltrim($class, '\\'), $caches))) {
-			if (extension_loaded('memcache')) {
+			// wrong PHP module is installed
+			if (extension_loaded('memcache') && !extension_loaded('memcached')) {
 				return SetupResult::warning(
-					$this->l10n->t('Memcached is configured as distributed cache, but the wrong PHP module "memcache" is installed. \\OC\\Memcache\\Memcached only supports "memcached" and not "memcache".'),
-					'https://code.google.com/p/memcached/wiki/PHPClientComparison'
+					$this->l10n->t('Memcached is configured as distributed cache, but the wrong PHP module ("memcache") is installed. Please install the PHP module "memcached".')
 				);
 			}
+			// required PHP module is missing
 			if (!extension_loaded('memcached')) {
 				return SetupResult::warning(
-					$this->l10n->t('Memcached is configured as distributed cache, but the PHP module "memcached" is not installed.')
+					$this->l10n->t('Memcached is configured as distributed cache, but the PHP module "memcached" is not installed. Please install the PHP module "memcached".')
 				);
 			}
 		}