What are the potential reasons for receiving a FacebookRequestException with code 2500 in PHP?

The FacebookRequestException with code 2500 typically occurs when the user's access token has expired or is invalid. To resolve this issue, you need to generate a new valid access token and use it to make the Facebook API request. 

try {
  // Make a Facebook API request
} catch(FacebookRequestException $e) {
  if ($e->getCode() == 2500) {
    // Handle the expired or invalid access token
    $newAccessToken = generateNewAccessToken();
    $facebook->setDefaultAccessToken($newAccessToken);
    // Retry the Facebook API request
  } else {
    // Handle other FacebookRequestExceptions
  }
}

function generateNewAccessToken() {
  // Code to generate a new valid access token
}

Keywords

Facebook SDK FacebookRequestException code 2500 API PHP

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