public function export()
    {
        $format_types = array();
        foreach ($this->formats as $format)
        {
            $format_class_name = get_class($format);
            if (in_array($format_class_name, $format_types))
                throw new \RuntimeException('Multiple ' .
                        $format_class_name . ' format classes specified');
            array_push($format_types, $format_class_name);
        }
        $out = array();
        if (!is_null($this->id))
            $out['id'] = $this->id;
        if (!is_null($this->prev_id))
            $out['prev-id'] = $this->prev_id;
        foreach ($this->formats as $format)
            $out[$format->name()] = $format->export();
        return $out;
    }
public function export()
    {
        $format_types = array();
        foreach ($this->formats as $format)
        {
            $format_class_name = get_class($format);
            if (in_array($format_class_name, $format_types))
                throw new \RuntimeException('Multiple ' .
                        $format_class_name . ' format classes specified');
            array_push($format_types, $format_class_name);
        }
        $out = array();
        if (!is_null($this->id))
            $out['id'] = $this->id;
        if (!is_null($this->prev_id))
            $out['prev-id'] = $this->prev_id;
        foreach ($this->formats as $format)
            $out[$format->name()] = $format->export();
        return $out;
    }
public function export ( ) { $ format_types = array ( ) ; foreach ( $ this -> formats as $ format ) { $ format_class_name = get_class ( $ format ) ; if ( in_array ( $ format_class_name , $ format_types ) ) throw new \ RuntimeException ( 'Multiple ' . $ format_class_name . ' format classes specified' ) ; array_push ( $ format_types , $ format_class_name ) ; } $ out = array ( ) ; if ( ! is_null ( $ this -> id ) ) $ out [ 'id' ] = $ this -> id ; if ( ! is_null ( $ this -> prev_id ) ) $ out [ 'prev-id' ] = $ this -> prev_id ; foreach ( $ this -> formats as $ format ) $ out [ $ format -> name ( ) ] = $ format -> export ( ) ; return $ out ; }
an error will be raised.
an error will be raised .