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copied!<p>Both tokens expire because they are the same user token. </p> <p>In the PHP SDK, if the token expires or gets thrown out for some error, the PHP SDK will set the default token to the application token</p> <p><a href="https://github.com/facebook/facebook-php-sdk/blob/master/src/base_facebook.php#L389" rel="nofollow">https://github.com/facebook/facebook-php-sdk/blob/master/src/base_facebook.php#L389</a></p> <pre><code> /** * Determines the access token that should be used for API calls. * The first time this is called, $this->accessToken is set equal * to either a valid user access token, or it's set to the application * access token if a valid user access token wasn't available. Subsequent * calls return whatever the first call returned. * * @return string The access token */ public function getAccessToken() { if ($this->accessToken !== null) { // we've done this already and cached it. Just return. return $this->accessToken; } // first establish access token to be the application // access token, in case we navigate to the /oauth/access_token // endpoint, where SOME access token is required. $this->setAccessToken($this->getApplicationAccessToken()); $user_access_token = $this->getUserAccessToken(); if ($user_access_token) { $this->setAccessToken($user_access_token); } return $this->accessToken; } </code></pre> <p>Thus you must introduce login handling in PHP to ensure no calls are taken unless a valid user access token is supplied.</p> <p>In JS SDK, most setups unless you explicitly set it otherwise will push the user through login after token expiry.</p> <p>As you describe it seems as though an error is pushing the PHP SDK to use the default application token.</p> <p>You can even sure that the user access token being used in the JS SDK will work in the PHP SDK <em>if it is indeed still active</em>, by setting it</p> <pre><code>$facebook->setAccessToken('YOUR_ACCESS_TOKEN_IN_JS_SDK'); </code></pre> <p>Once this works then the error elsewhere in your code (which you have not supplied).</p>

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