PHPCMS安装，这个怎么解决？纯小白

Fatal error: Uncaught Error: Class 'mysqli' not found in E:\wampserver\www\p\phpcms\libs\classes\db_mysqli.class.php:55 Stack trace: #0 E:\wampserver\www\p\phpcms\libs\classes\db_mysqli.class.php(76): db_mysqli->connect() #1 E:\wampserver\www\p\phpcms\libs\classes\db_mysqli.class.php(104): db_mysqli->execute('SELECT * FROM `...') #2 E:\wampserver\www\p\phpcms\libs\classes\model.class.php(45): db_mysqli->select('*', 'v9_block', ' WHERE `pos` =...', '', '', '', '') #3 E:\wampserver\www\p\phpcms\modules\block\classes\block_tag.class.php(17): model->select(' `pos` = 'index...') #4 E:\wampserver\www\p\caches\caches_template\default\content\index.php(32): block_tag->pc_tag(Array) #5 E:\wampserver\www\p\phpcms\modules\content\index.php(31): include('E:\\wampserver\\w...') #6 E:\wampserver\www\p\phpcms\libs\classes\application.class.php(31): index->init() #7 E:\wampserver\www\p\phpcms\libs\classes\application.class.php(19): application->init() #8 E:\wampserver\www\p\phpcms\base.php(126): application->__construct() #9 E:\wampserv in E:\wampserver\www\p\phpcms\libs\classes\db_mysqli.class.php on line 55

启用php_mysqli.dll