[RESOLVED] problems in having 0 as input

[kingdm]

Hello there.

I have a form that has a 3 fields that ask for a number. Each fields must have an input of 3 digits each, summing up will have a total of 9. However, the problem arise when the input is 0.

Example:

Field 1: 123
Field 2: 000
Field 3: 123

Whenever I check for validation of the total number of the 3 fields , it returns an error. I've seen that the Field 2 having the input of three 0's is not seen.

Here is my script:

<?php

$field1 = intval($_POST['field1']);
$field2 = intval($_POST['field2']);
$field3 = intval($_POST['field3']);

$fieldtotalsize = 9; //must be the total size constant

$fieldsize = strlen($field1) + strlen($field2) + strlen($field3);

if($fieldsize != $fieldtotalsize)
	{
		$disp = "Complete your input.";
	}
    else
           {
                    echo "Success";
           }    
?>   

Hope someone help me in this somehow simple problem for an advanced PHP programmer.

[halojoy]

$field2 = intval($_POST['field2']);
if there are three zeros, intval() will convert it to one integer 0
and so the strlen() is no longer 3

you should first check strlen() of the fields
and after this you can do intval() to convert strings to number values

[kingdm]

Once again thanks halojoy for clarifying my script. Now I know what to do next. Thanks.