So Simple - Isset

[magnetica]

The code below simply checks if  the variable $name is set and returns a string accordingly.

 

But it works if the $name is set but if it is not then is doesn't?

 

Why is this? Whats wrong with this?

 

 

$name = $_POST['name'];
if ( !isset($name) )
   {
       echo "Not Set";
   }
   else
   {
       echo $name;
   }

[Orio]

It is always set... Because you set it to the value of $_POST['name'] (which can be set or not). This is what you meant:

<?php

if ( !isset($_POST['name']) )
   {
       echo "Not Set";
   }
   else
   {
       echo $_POST['name'];
   }

?>

 

 

Orio.

[magnetica]

Oh of course.. Haha

 

Just me not thinking logically again LOL

 

Cheers

[magnetica]

That didn't work so I changed it to:

 

if ( empty($_POST['name']) )
   {
       echo "Not Set";
   }
   else
   {
       echo $_POST['name'];
   }

[Orio]

That depends.

I suppose you have a form that contains a text field named "name". By checking if it is not set, you are checking if the form was submitted or did someone access directly to the file processing the form. By checking if it is empty, you are checking if the form was submitted and someone didn't fill in the "name" field.

 

Orio.

[magnetica]

Well yes. As i figured out checking with the isset is to check if the forms submitted no matter whether it is or isn't set it will always be true