php5.3 - 安装的wecenter 问答系统， 现在升级PHP 到5.3版本就报错了，求解 什么原因 很急 在线等。
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2022-06-09 19:34:59
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Application error
------
Message: Can't connect master database: The Mysqli extension is required for this adapter but the extension is not loaded
------
Build: 3.1.3 20150706
PHP Version: 5.3.29
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36
------
exception 'Zend_Exception' with message 'Can't connect master database: The Mysqli extension is required for this adapter but the extension is not loaded' in /www/web/seozf/public_html/zhifou/system/core/db.php:45
Stack trace:
#0 /www/web/seozf/public_html/zhifou/system/functions.inc.php(536): core_db->__construct()
#1 /www/web/seozf/public_html/zhifou/system/aws_app.inc.php(114): load_class('core_db')
#2 /www/web/seozf/public_html/zhifou/system/aws_app.inc.php(55): AWS_APP::init()
#3 /www/web/seozf/public_html/zhifou/index.php(23): AWS_APP::run()
#4 {main}
在wecenter社区没找到人能解决这个问题求解什么原因啊
我对wecenter 不熟
回复内容：
Application error
------
Message: Can't connect master database: The Mysqli extension is required for this adapter but the extension is not loaded
------
Build: 3.1.3 20150706
PHP Version: 5.3.29
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36
------
exception 'Zend_Exception' with message 'Can't connect master database: The Mysqli extension is required for this adapter but the extension is not loaded' in /www/web/seozf/public_html/zhifou/system/core/db.php:45
Stack trace:
#0 /www/web/seozf/public_html/zhifou/system/functions.inc.php(536): core_db->__construct()
#1 /www/web/seozf/public_html/zhifou/system/aws_app.inc.php(114): load_class('core_db')
#2 /www/web/seozf/public_html/zhifou/system/aws_app.inc.php(55): AWS_APP::init()
#3 /www/web/seozf/public_html/zhifou/index.php(23): AWS_APP::run()
#4 {main}
在wecenter社区没找到人能解决这个问题求解什么原因啊
我对wecenter 不熟
需要 Mysqli 扩展，你升级之后的 PHP 没有安装或者打开这个扩展