java - base class for all exception in PHP -

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i wanted know base class exception in php, have exception class in java , classes inherited it,the reason want know while working on facebook app in php , want catch fbapiexception in class object, 

try {             $accesstoken = $facebook->getaccesstoken();             $userdata= $facebook->api('/me', 'get' ,array ('access_token' => $accesstoken));             $email= $facebook->api('/me?fields=email', 'get' ,array ('access_token' => $accesstoken));             }             catch(exception  $e) {                  return false;        }

so if exception occur , catch that.


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