php如何開啟mysqli擴展

php開啟mysqli擴充功能的方法：先開啟php.ini設定檔；然後找到【extension=php_mysqli.dll】，並取消註解；最後找到【extension_dir】，設定ext路徑即可。

具體步驟：

（推薦教學：php圖文教學）

首先打開php.ini設定文件，搜尋php_mysqli.dll;

然後設定extension_dir指令

; Windows Extensions
; Note that ODBC support is built in, so no dll is needed for it.
; Note that many DLL files are located in the extensions/ (PHP 4) ext/ (PHP 5+)
; extension folders as well as the separate PECL DLL download (PHP 5+).
; Be sure to appropriately set the extension_dir directive.
;一定要适当地设置extension_dir指令。

（影片教學推薦：php影片教學）

最後在php.ini裡面搜尋extension_dir;

extension_dir = “G:/web/php7.1/ext”

檢查G:/web/php7.1/ext安裝路徑是否存在php_mysqli.dll（如果不存在應該是PHP安裝包損壞，請重新下載）。

完成以上步驟就開啟成功了。

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