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<?php
namespace src\pdodatabase\elementos;
use Exception;
class Orden
{
private $_orden;
public function __construct(string $Orden)
$this->_orden = $this->setOrden($Orden);
}
public function parametro(): string
return $this->_orden;
private function setOrden(string $orden): string
if(empty($orden))
throw new Exception("La sentencia ORDEN BY no puede estar vacia");
$this->alfaNumerico($orden);
return ' ORDER BY '.$orden;
private function alfaNumerico($string)
if(!ctype_alnum($string))
throw new Exception("Caracter invalido en el campo de la sentencia ORDEN BY");
OsvaldoGDelRio /
pdo-database
