isset - Form submission results in a blank page in PHP

I am trying to make a login system and i want to create a conditional statement that checks whether the global variable $_POST['submit-form'] is set.

If the global variable $_POST['submit-form'] is set then i want to echo out the fields of the submitted forms. This works fine..

The problem comes when i want to check whether the global variable $_POST['submit-form'] is empty, i get a blank page when i submit the form with nothing. It is supposed to echo out something like "You have entered nothing, please try again'.

I don't know what is wrong.

This is the code for the form.

  



      Name: 
      E-mail: 



    


  

..and this is the code for the form handler.

    if(isset($_POST['submit-form'])) {


        $name = $_POST['name'];
        $email = $_POST['email'];


      if(($_POST['name'] != "") && ($_POST['email']!= "")) {    


          echo "This is your name: ".$name."
";
           echo "This is your email: ".$email;

      // header('refresh=3;url = ../leden/index.php');

       }

    } else {


          echo "You have entered nothing or your username and/or password is incorrect, please try again.";

      // header('refresh=3;url = /test-form1.php');

 }

?>

Answer

The problem with your code is that checking if it's set isn't enough .. Because it may be set and be empty -- Realistically what you want is to check both isset and whether it's empty IE:

if (isset($_POST['submit-form'] && $_POST['submit-form'] != '' && $_POST['submit-form'] != null)  

If the above if statement fails your value for $_POST['submit-form'] is most likely not being submitted.

UPDATE
Check for blank fields

if ($_POST['name'] != '' && $_POST['email'] != ''){

   // Do stuff
}else{
    if ($_POST['name'] == ''){
       echo "name is empty";
    }
    if ($_POST['email'] == ''){
       echo "email is empty";
    }
}