Php filters

PHP
1

Hello all

I’m not able to understand which function to believe and use.

For eg.



$email = someuser@somedomain.com;

$validemail = filter_input(INPUT_POST, $email, FILTER_VALIDATE_EMAIL);		
		if($validemail)
		{
			echo "email is valid";
		}
		else
		{
			echo "email is not valid";
		}

This example shows that email is invalid while if I use


$validemail = filter_var($email, FILTER_VALIDATE_EMAIL);		
		if($validemail)
		{
			echo "email is valid";
		}
		else
		{
			echo "email is not valid";
		}

And this one shows that email is valid.
I’m not able to understand how these functions are working so differently.

2

Are you sending the email address in your first example via POST?

[fphp]filter_input[/fphp]

Gets a specific external variable by name and optionally filters it

If not, the functions are performing perfectly.

3

The second param for filter_input should be a name of a GET key, rather than a variable:

$email = filter_input(INPUT_POST, ‘email’, FILTER_VALIDATE_EMAIL);

would check if $_GET[‘email’] is valid.

4

Fixed. :wink:

5

Yupp, I’m sending this information via POST only.

But then I first parse the POST and assign them into the separated variable

like $email = $_POST[‘someuser@somedomain.com’];

and then I tried to validate the email via ‘filter_input’.

Well I think I’m getting the drift here as first I’ve to validate the email directly without assigning into any variable.

Well dunno whatz going wrong in that.

6

Yeah was thinking the same, that it should be the name of the key instead of variable.

Thanx…