src/Airbrake/EventFilter/Error/NotifyOnWarning.php
public function shouldSendError($type, $message, $file = null, $line = null, $context = null)
    {
        return !array_key_exists($type, self::$warningErrors);
    }
public function shouldSendError($type, $message, $file = null, $line = null, $context = null)
    {
        return !array_key_exists($type, self::$warningErrors);
    }
public function shouldSendError ( $ type , $ message , $ file = null , $ line = null , $ context = null ) { return ! array_key_exists ( $ type , self :: $ warningErrors ) ; }
Filters out PHP errors before they get sent

@param int $type
@param string $message
@param string $file
@param int $line
@param array $context
@see http://us3.php.net/manual/en/function.set-error-handler.php
@return bool
Filters out PHP errors before they get sent