PHP7 constructor and fix for some noticed

memcache-class-object-cache.php line #415

function __construct() {
		global $memcached_servers;

		if ( isset( $memcached_servers ) ) {
			$buckets = $memcached_servers;
		} else {
			$buckets = array( '127.0.0.1' );
		}

		reset( $buckets );
		if ( is_int( key( $buckets ) ) ) {
			$buckets = array( 'default' => $buckets );
		}

		foreach ( $buckets as $bucket => $servers ) {
			$this->mc[ $bucket ] = new Memcache();
			foreach ( $servers as $server ) {
                                #strpos if server is wihout port
				if(strpos($server, ':') !== false) {
					list ( $node, $port ) = explode( ':', $server );
				} else {
					$node = $server;
				}
				if ( empty($port) ) {
					$port = ini_get( 'memcache.default_port' );
				}
				$port = intval( $port );

https://ww.wp.xz.cn/plugins/memcached-is-your-friend/