+- CodeIgniter Forums (https://forum.codeigniter.com)
+-- Forum: CodeIgniter 4 (https://forum.codeigniter.com/forumdisplay.php?fid=28)
+--- Forum: CodeIgniter 4 Support (https://forum.codeigniter.com/forumdisplay.php?fid=30)
+--- Thread: How to Sanitize data in FilterInterface CI4 (/showthread.php?tid=77796)
How to Sanitize data in FilterInterface CI4 - what2see - 10-19-2020
Hi,
Can somebody tell me how to use FilterInterface in modifying request before using it in the Controller? I want to sanitize or to remove unwanted characters in the data before using it in my Controller.
Here is the sample of my code:
Filter:
PHP Code:
namespace App\Filters;
use CodeIgniter\HTTP\RequestInterface;
use CodeIgniter\HTTP\ResponseInterface;
use CodeIgniter\Filters\FilterInterface;
class SanitizeFields implements FilterInterface
{
protected $session;
public function before(RequestInterface $request, $arguments = null)
{
$request->getVar('number_only', FILTER_SANITIZE_NUMBER_INT);
}
public function after(RequestInterface $request, ResponseInterface $response, $arguments = null)
{
// Do something here
}
}
Controller:
PHP Code:
//controller
public function getData()
{
echo $this->request->getVar('number_only');
}
Is it possible to sanitize the value of number_only variable from "123abc456" to "123456"?
Thank you!
RE: How to Sanitize data in FilterInterface CI4 - InsiteFX - 10-20-2020
PHP Code:
// Check to see if the variable is an integer
if (filter_var($this->request->getVar('number_only'), FILTER_VALIDATE_INT) === false)
{
// ERROR!
}
else
{
echo $this->request->getVar('number_only');
}