PHP - Use isset inside function not working..?
- by pnichols
I have a PHP script that when loaded, check first if it was loaded via a POST, if not if GET['id'] is a number.
Now I know I could do this like this:
if(isset($_GET['id']) AND isNum($_GET['id'])) { ... }
function isNum($data) {
$data = sanitize($data);
if ( ctype_digit($data) ) {
return true;
} else {
return false;
}
}
But I would like to do it this way:
if(isNum($_GET['id'])) { ... }
function isNum($data) {
if ( isset($data) ) {
$data = sanitize($data);
if ( ctype_digit($data) ) {
return true;
} else {
return false;
}
} else {
return false;
}
}
When I try it this way, if $_GET['id'] isn't set, I get a warning of undefined index: id... It's like as soon as I put my $_GET['id'] within my function call, it sends a warning... Even though my function will check if that var is set or not...
Is there another way to do what I want to do, or am I forced to always check isset then add my other requirements..??
