private function processFilterParams($key, $param)
    {
        $this->filter[] = [
            $key,
            '=',
            (is_numeric($param)) ? (float) $param : $param
        ];
    }
private function processFilterParams($key, $param)
    {
        $this->filter[] = [
            $key,
            '=',
            (is_numeric($param)) ? (float) $param : $param
        ];
    }
private function processFilterParams ( $ key , $ param ) { $ this -> filter [ ] = [ $ key , '=' , ( is_numeric ( $ param ) ) ? ( float ) $ param : $ param ] ; }
Process filter params

@param string $key   Param name
@param string $param Param value

@return void
Process filter params