抱歉，使用 PHP Facebook SDK 尝试登录以通过 facebook 工作时出现问题

Question

I get the error every time I try to I use the loginUrl. I've done all the necessary things in facebook dev portal

<?php
session_start();
require( __DIR__.'/src/Facebook/autoload.php');

$fb = new Facebook\Facebook([
  'app_id' => '{}', // Replace {app-id} with your app id
  'app_secret' => '{}',
  'default_graph_version' => 'v2.5',
  ]);


$helper = $fb->getRedirectLoginHelper();
$permissions = ['email', 'user_posts']; // optional
$loginUrl    = $helper->getLoginUrl($callback, $permissions);
echo '<a href="' . $loginUrl . '">Log in with Facebook!</a>';
?>

Answer 1

Your app_id and app_secret shouldn't have {} around them. And it might not be the best idea to post your app_secret here.

So your code would be this:

<?php
session_start();
require( __DIR__.'/src/Facebook/autoload.php');

$fb = new Facebook\Facebook([
  'app_id' => '119245818585909', // Replace {app-id} with your app id
  'app_secret' => '6a4bb23f0b6bc1c6b3f0cd6bf5e3239f',
  'default_graph_version' => 'v2.5',
  ]);


$helper = $fb->getRedirectLoginHelper();
$permissions = ['email', 'user_posts']; // optional
$loginUrl    = $helper->getLoginUrl($callback, $permissions);
echo '<a href="' . $loginUrl . '">Log in with Facebook!</a>';
?>

Answer 2

1. please make sure that App Domains in settings is start with http or htttps.
2. further make sure that Valid OAuth redirect URIs in "Facebook Login"