11 files changed, 128 insertions, 129 deletions
diff --git a/.travis.yml b/.travis.yml
index d6fc46c585..82ddd01158 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,6 +31,7 @@ services:
   - redis-server
   - postgresql
   - mysql
+  - memcached
 
 install:
   - travis/setup-phpbb.sh $DB $TRAVIS_PHP_VERSION $NOTESTS
diff --git a/phpBB/docs/coding-guidelines.html b/phpBB/docs/coding-guidelines.html
index 6cf647c55f..ffa2112771 100644
--- a/phpBB/docs/coding-guidelines.html
+++ b/phpBB/docs/coding-guidelines.html
@@ -234,9 +234,9 @@ PHPBB_USE_BOARD_URL_PATH   (use generate_board_url() for image paths instead of
 PHPBB_DISABLE_ACP_EDITOR   (disable ACP style editor for templates)
 PHPBB_DISABLE_CONFIG_CHECK (disable ACP config.php writeable check)
 
-PHPBB_ACM_MEMCACHE_PORT     (overwrite memcached port, default is 11211)
-PHPBB_ACM_MEMCACHE_COMPRESS (overwrite memcached compress setting, default is disabled)
-PHPBB_ACM_MEMCACHE_HOST     (overwrite memcached host name, default is localhost)
+PHPBB_ACM_MEMCACHED_PORT     (overwrite memcached port, default is 11211)
+PHPBB_ACM_MEMCACHED_COMPRESS (overwrite memcached compress setting, default is disabled)
+PHPBB_ACM_MEMCACHED_HOST     (overwrite memcached host name, default is localhost)
 
 PHPBB_ACM_REDIS_HOST        (overwrite redis host name, default is localhost)
 PHPBB_ACM_REDIS_PORT        (overwrite redis port, default is 6379)
diff --git a/phpBB/phpbb/cache/driver/memcache.php b/phpBB/phpbb/cache/driver/memcache.php
deleted file mode 100644
index 57f138f574..0000000000
--- a/phpBB/phpbb/cache/driver/memcache.php
+++ /dev/null
@@ -1,122 +0,0 @@
-<?php
-/**
-*
-* This file is part of the phpBB Forum Software package.
-*
-* @copyright (c) phpBB Limited <https://www.phpbb.com>
-* @license GNU General Public License, version 2 (GPL-2.0)
-*
-* For full copyright and license information, please see
-* the docs/CREDITS.txt file.
-*
-*/
-
-namespace phpbb\cache\driver;
-
-if (!defined('PHPBB_ACM_MEMCACHE_PORT'))
-{
-	define('PHPBB_ACM_MEMCACHE_PORT', 11211);
-}
-
-if (!defined('PHPBB_ACM_MEMCACHE_COMPRESS'))
-{
-	define('PHPBB_ACM_MEMCACHE_COMPRESS', false);
-}
-
-if (!defined('PHPBB_ACM_MEMCACHE_HOST'))
-{
-	define('PHPBB_ACM_MEMCACHE_HOST', 'localhost');
-}
-
-if (!defined('PHPBB_ACM_MEMCACHE'))
-{
-	//can define multiple servers with host1/port1,host2/port2 format
-	define('PHPBB_ACM_MEMCACHE', PHPBB_ACM_MEMCACHE_HOST . '/' . PHPBB_ACM_MEMCACHE_PORT);
-}
-
-/**
-* ACM for Memcached
-*/
-class memcache extends \phpbb\cache\driver\memory
-{
-	var $extension = 'memcache';
-
-	var $memcache;
-	var $flags = 0;
-
-	function __construct()
-	{
-		// Call the parent constructor
-		parent::__construct();
-
-		$this->memcache = new \Memcache;
-		foreach (explode(',', PHPBB_ACM_MEMCACHE) as $u)
-		{
-			preg_match('#(.*)/(\d+)#', $u, $parts);
-			$this->memcache->addServer(trim($parts[1]), (int) trim($parts[2]));
-		}
-		$this->flags = (PHPBB_ACM_MEMCACHE_COMPRESS) ? MEMCACHE_COMPRESSED : 0;
-	}
-
-	/**
-	* {@inheritDoc}
-	*/
-	function unload()
-	{
-		parent::unload();
-
-		$this->memcache->close();
-	}
-
-	/**
-	* {@inheritDoc}
-	*/
-	function purge()
-	{
-		$this->memcache->flush();
-
-		parent::purge();
-	}
-
-	/**
-	* Fetch an item from the cache
-	*
-	* @access protected
-	* @param string $var Cache key
-	* @return mixed Cached data
-	*/
-	function _read($var)
-	{
-		return $this->memcache->get($this->key_prefix . $var);
-	}
-
-	/**
-	* Store data in the cache
-	*
-	* @access protected
-	* @param string $var Cache key
-	* @param mixed $data Data to store
-	* @param int $ttl Time-to-live of cached data
-	* @return bool True if the operation succeeded
-	*/
-	function _write($var, $data, $ttl = 2592000)
-	{
-		if (!$this->memcache->replace($this->key_prefix . $var, $data, $this->flags, $ttl))
-		{
-			return $this->memcache->set($this->key_prefix . $var, $data, $this->flags, $ttl);
-		}
-		return true;
-	}
-
-	/**
-	* Remove an item from the cache
-	*
-	* @access protected
-	* @param string $var Cache key
-	* @return bool True if the operation succeeded
-	*/
-	function _delete($var)
-	{
-		return $this->memcache->delete($this->key_prefix . $var);
-	}
-}
diff --git a/phpBB/phpbb/cache/driver/memcached.php b/phpBB/phpbb/cache/driver/memcached.php
index 7d66759ec2..fbb587a369 100644
--- a/phpBB/phpbb/cache/driver/memcached.php
+++ b/phpBB/phpbb/cache/driver/memcached.php
@@ -50,12 +50,16 @@ class memcached extends \phpbb\cache\driver\memory
 
 	/**
 	 * Memcached constructor
+	 *
+	 * @param string $memcached_servers Memcached servers string (optional)
 	 */
-	public function __construct()
+	public function __construct($memcached_servers = '')
 	{
 		// Call the parent constructor
 		parent::__construct();
 
+		$memcached_servers = $memcached_servers ?: PHPBB_ACM_MEMCACHED;
+
 		$this->memcached = new \Memcached();
 		$this->memcached->setOption(\Memcached::OPT_BINARY_PROTOCOL, true);
 		// Memcached defaults to using compression, disable if we don't want
@@ -65,10 +69,20 @@ class memcached extends \phpbb\cache\driver\memory
 			$this->memcached->setOption(\Memcached::OPT_COMPRESSION, false);
 		}
 
-		foreach (explode(',', PHPBB_ACM_MEMCACHED) as $u)
+		$server_list = [];
+		foreach (explode(',', $memcached_servers) as $u)
+		{
+			if (preg_match('#(.*)/(\d+)#', $u, $parts))
+			{
+				$server_list[] = [trim($parts[1]), (int) trim($parts[2])];
+			}
+		}
+
+		$this->memcached->addServers($server_list);
+
+		if (empty($server_list) || empty($this->memcached->getStats()))
 		{
-			preg_match('#(.*)/(\d+)#', $u, $parts);
-			$this->memcached->addServer(trim($parts[1]), (int) trim($parts[2]));
+			trigger_error('Could not connect to memcached server(s).');
 		}
 	}
 
diff --git a/tests/RUNNING_TESTS.md b/tests/RUNNING_TESTS.md
index 516541151c..54db823b4a 100644
--- a/tests/RUNNING_TESTS.md
+++ b/tests/RUNNING_TESTS.md
@@ -109,6 +109,21 @@ Or via environment variables as follows:
 
     $ PHPBB_TEST_REDIS_HOST=localhost PHPBB_TEST_REDIS_PORT=6379 phpunit
 
+Memcached
+---------
+
+In order to run tests for the memcached cache driver, at least one of memcached
+host or port must be specified in the test configuration. This can be done via
+test_config.php as follows:
+
+    <?php
+    $phpbb_memcached_host = 'localhost';
+    $phpbb_memcached_port = '11211';
+
+Or via environment variables as follows:
+
+    $ PHPBB_TEST_MEMCACHED_HOST=localhost PHPBB_TEST_MEMCACHED_PORT=11211 phpunit
+
 Running
 =======
 
diff --git a/tests/cache/memcached_test.php b/tests/cache/memcached_test.php
new file mode 100644
index 0000000000..650b72ea18
--- /dev/null
+++ b/tests/cache/memcached_test.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+require_once dirname(__FILE__) . '/common_test_case.php';
+
+class phpbb_cache_memcached_driver_test extends \phpbb_cache_common_test_case
+{
+	protected static $config;
+
+	public function getDataSet()
+	{
+		return $this->createXMLDataSet(dirname(__FILE__) . '/fixtures/config.xml');
+	}
+
+	static public function setUpBeforeClass()
+	{
+		if (!extension_loaded('memcached'))
+		{
+			self::markTestSkipped('memcached extension is not loaded');
+		}
+
+		$config = phpbb_test_case_helpers::get_test_config();
+		if (isset($config['memcached_host']) || isset($config['memcached_port']))
+		{
+			$host = isset($config['memcached_host']) ? $config['memcached_host'] : 'localhost';
+			$port = isset($config['memcached_port']) ? $config['memcached_port'] : 11211;
+			self::$config = array('host' => $host, 'port' => $port);
+		}
+		else
+		{
+			self::markTestSkipped('Test memcached host/port is not specified');
+		}
+
+		$memcached = new \Memcached();
+		$memcached->addServer(self::$config['host'], self::$config['port']);
+		if (empty($memcached->getStats()))
+		{
+			self::markTestSkipped('Test memcached server is not available');
+		}
+
+		parent::setUpBeforeClass();
+	}
+
+	protected function setUp(): void
+	{
+		global $phpbb_root_path, $phpbb_container;
+
+		parent::setUp();
+
+		$phpbb_container = new phpbb_mock_container_builder();
+		$phpbb_container->setParameter('core.cache_dir', $phpbb_root_path . 'cache/' . PHPBB_ENVIRONMENT . '/');
+		$this->driver = new \phpbb\cache\driver\memcached(self::$config['host'] . '/' . self::$config['port']);
+		$this->driver->purge();
+	}
+}
diff --git a/tests/test_framework/phpbb_test_case_helpers.php b/tests/test_framework/phpbb_test_case_helpers.php
index 807a64d810..9a2ea275d0 100644
--- a/tests/test_framework/phpbb_test_case_helpers.php
+++ b/tests/test_framework/phpbb_test_case_helpers.php
@@ -173,6 +173,16 @@ class phpbb_test_case_helpers
 			{
 				$config['fulltext_sphinx_id'] = $fulltext_sphinx_id;
 			}
+
+			if (isset($phpbb_memcached_host))
+			{
+				$config['memcached_host'] = $phpbb_memcached_host;
+			}
+
+			if (isset($phpbb_memcached_port))
+			{
+				$config['memcached_port'] = $phpbb_memcached_port;
+			}
 		}
 
 		if (isset($_SERVER['PHPBB_TEST_DBMS']))
@@ -205,6 +215,16 @@ class phpbb_test_case_helpers
 			$config['redis_port'] = $_SERVER['PHPBB_TEST_REDIS_PORT'];
 		}
 
+		if (isset($_SERVER['PHPBB_TEST_MEMCACHED_HOST']))
+		{
+			$config['memcached_host'] = $_SERVER['PHPBB_TEST_MEMCACHED_HOST'];
+		}
+
+		if (isset($_SERVER['PHPBB_TEST_MEMCACHED_PORT']))
+		{
+			$config['memcached_port'] = $_SERVER['PHPBB_TEST_MEMCACHED_PORT'];
+		}
+
 		return $config;
 	}
 
diff --git a/travis/phpunit-mysqli-travis.xml b/travis/phpunit-mysqli-travis.xml
index d2284086b9..0f064ab996 100644
--- a/travis/phpunit-mysqli-travis.xml
+++ b/travis/phpunit-mysqli-travis.xml
@@ -38,6 +38,7 @@
 		<server name="PHPBB_TEST_DBUSER" value="root" />
 		<server name="PHPBB_TEST_DBPASSWD" value="" />
 		<server name="PHPBB_TEST_REDIS_HOST" value="localhost" />
+		<server name="PHPBB_TEST_MEMCACHED_HOST" value="localhost" />
 		<server name="PHPBB_TEST_TABLE_PREFIX" value="phpbb_"/>
 		<server name="PHPBB_FUNCTIONAL_URL" value="http://localhost/" />
 	</php>
diff --git a/travis/phpunit-postgres-travis.xml b/travis/phpunit-postgres-travis.xml
index 6faab4d61a..f9b8a6f595 100644
--- a/travis/phpunit-postgres-travis.xml
+++ b/travis/phpunit-postgres-travis.xml
@@ -38,6 +38,7 @@
 		<server name="PHPBB_TEST_DBUSER" value="postgres" />
 		<server name="PHPBB_TEST_DBPASSWD" value="" />
 		<server name="PHPBB_TEST_REDIS_HOST" value="localhost" />
+		<server name="PHPBB_TEST_MEMCACHED_HOST" value="localhost" />
 		<server name="PHPBB_TEST_TABLE_PREFIX" value="phpbb_"/>
 		<server name="PHPBB_FUNCTIONAL_URL" value="http://localhost/" />
 	</php>
diff --git a/travis/phpunit-sqlite3-travis.xml b/travis/phpunit-sqlite3-travis.xml
index 633963c9fb..1b1fa24e7d 100644
--- a/travis/phpunit-sqlite3-travis.xml
+++ b/travis/phpunit-sqlite3-travis.xml
@@ -38,6 +38,7 @@
 		<!--server name="PHPBB_TEST_DBUSER" value="" /-->
 		<!--server name="PHPBB_TEST_DBPASSWD" value="" /-->
 		<server name="PHPBB_TEST_REDIS_HOST" value="localhost" />
+		<server name="PHPBB_TEST_MEMCACHED_HOST" value="localhost" />
 		<server name="PHPBB_TEST_TABLE_PREFIX" value="phpbb_"/>
 		<server name="PHPBB_FUNCTIONAL_URL" value="http://localhost/" />
 	</php>
diff --git a/travis/setup-php-extensions.sh b/travis/setup-php-extensions.sh
index 851704213e..0fcddb044f 100755
--- a/travis/setup-php-extensions.sh
+++ b/travis/setup-php-extensions.sh
@@ -57,6 +57,9 @@ fi
 # Disable xdebug on travis
 phpenv config-rm xdebug.ini || true
 
+# memcached
+register_php_extension memcached "$php_ini_file"
+
 # redis
 # Disabled redis for now as it causes travis to fail
 # git clone git://github.com/nicolasff/phpredis.git redis