protected function generatePostFields () : string
	{
		$fieldsString = '';
		foreach($this->fields as $key => $value) $fieldsString .= $key.'='.$value.'&';
		return rtrim($fieldsString, '&');
	}
protected function generatePostFields () : string
	{
		$fieldsString = '';
		foreach($this->fields as $key => $value) $fieldsString .= $key.'='.$value.'&';
		return rtrim($fieldsString, '&');
	}
protected function generatePostFields ( ) : string { $ fieldsString = '' ; foreach ( $ this -> fields as $ key => $ value ) $ fieldsString .= $ key . '=' . $ value . '&' ; return rtrim ( $ fieldsString , '&' ) ; }
Generate the post fields to be sent
@return string
Generate the post fields to be sent