Connexion SSO via php with azure application

Hello,

I would like to make a button in php to make a login via microsoft 365.

I use this url but the response is extremely slow.

$request = curl_init("https://login.microsoftonline.com/common/oauth2/token");

I used a lot of this code
https://github.com/OfficeDev/Groups-API-Office-Add-in-PHP-Sample

Could you please help me?

Don't hesitate if you need technical details