Looking for logging into the Facebook Button Php site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Facebook Button Php site. After that you can login as usual with your login credentials.
https://stackoverflow.com/questions/23038863/facebook-php-sdk-and-login-button
https://qiita.com/nightyknite/items/10ab1853581265ef4bd6
https://qiita.com/dq-kazuya-katayama/items/80283cc82d7680dee27f
https://developers.facebook.com/docs/facebook-login/web/login-button?locale=ja_JP
https://www.cloudways.com/blog/add-facebook-login-in-php/
https://www.msng.info/archives/2012/10/facebook-login-with-php.php
https://www.codexworld.com/login-with-facebook-using-php/
https://www.phpjabbers.com/how-to-create-a-facebook-login-for-your-website-using-php-v5-php68.html
https://cocomina.com/110/
https://medium.com/olympikesoft/login-with-facebook-using-php-e48e2f347654
https://gray-code.com/php/imprementation-of-facebook-login/
https://wordpress.org/support/topic/%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3%E7%94%BB%E9%9D%A2%E3%81%B8%E9%A3%9B%E3%81%B3%E3%81%BE%E3%81%9B%E3%82%93/
https://www.tutorialspoint.com/php/php_facebook_login.htm