MySQLi not found error | 易学教程

问题

I just deployed my website to a staging environment and am getting the following error:

Fatal error: Class 'mysqli' not found in D:\ClientSites\baileyboiler.com\www\new\php\db.php on line 11

At first I assumed that MySQLI was simply not installed, but running a phpinfo() reveals the following:

To me it looks like MySQLI is installed (though I could be reading this wrong). What should I do?

Code

class DB
{
    public static function GetConnection()
    {
        return new mysqli(DBHOST, DBUSER, DBPASSWORD, DEFAULTDATABASE);
    }
}

(line 11 is the return new mysql(...);)

Update

I added extension=php_mysqli.dll to my php.ini located at /Windows/php.ini (according to phpinfo(), this is the one being loaded):

Loaded Configuration File   C:\WINDOWS\php.ini

But the error persists. I know that mysqli.dll exists at C:\php\ext - because I can see the file. What now?

回答1:

I got the error corrected by enabling/editing the following config in php.ini:

1st (uncomment and add config):

include_path = "C:\php\includes"

2nd (uncomment):

extension_dir = "ext"

3rd (uncomment and edit config):

extension=D:/PHP/ext/php_mysql.dll
extension=D:/PHP/ext/php_mysqli.dll

回答2:

Make sure is enabled under php.ini just find php_mysqli.dll and remove semi-colon and restart apache

回答3:

Christian Mark is right but I think it need:

4rd Copy php.ini to "C:\Windows". On my computer, need copy it to "C:\Windows", Because phpinfo() output "Configuration File (php.ini) Path: C:\Windows" and "Loaded Configuration File: C:\Windows\php.ini"

5rd login out Computer and login in.

Then it work for me.

If I don't do 4,5rd, It's also don't work for me, the phpinfo output include_path is not my configured. and extension_di also not. run the test also not work.

来源：https://stackoverflow.com/questions/21864663/mysqli-not-found-error

标签

php

mysqli

iis-5