How to add mysqli extension to PHP

PHP enables mysqli extension

Call to undefined function mysqli_connect(). To solve this problem, you need to enable the mysqli extension.
Steps:
1. Search php_mysqli.dll in php.ini

##2 , set the extension_dir command

##Search extension_dir

in php.ini

(

Note that you cannot fill in the relative path here. In my environment, the relative path is invalid when testing

)

extension_dir = “G:/web/php7.1/ext”

Check G:/web/php7.1 Does php_mysqli.dll exist in the /ext installation path (if it does not exist, the PHP installation package may be damaged, please download it again)

3. Open successfully

Recommended tutorial:

PHP video tutorial

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