如何将.dll扩展名添加到.htaccess文件[重复]

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I am currently on shared hosting.I need to know how to add extensions that I need via htaccess.Normally, I would update the php.ini file with the following:

extension=php_mbstring.dll
extension=php_exif.dll

I put below lines in the htaccess file to make this occur.

php_extension mbstring.so
php_extension php_exif.so

But I am geeting internal server error.

Please help.

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You do not have to include last two lines in the .htaccess file since you have added the extensions in php.ini.