isset

[tcooper]

I have a form which contains input boxes, select boxes and list boxes. Lets say I need a variable from one of the select boxes. What I am doing is submitting the form to itself and reading that variable then I turn the select box into a text box with the variable the user has chosen. If I do this does the form think all fields are "set" or is it only the fields that I have passed. For instance, lets say I have 10 boxes. After the 3rd box I submit the form. Does it think only boxes 1 through 3 are "set" or are boxes 4 through 10 "set" as well? I have some changes to my form and I don't want to go to the trouble of adding "isset" phrases throughout the form if it won't work which is why I need a better understanding of how "isset" works. Thank you.

[bubblenut]

All are set, you can check if they're empty with [man]empty()[/man]

[sidney]

i disagree if the select box has not been selected and ther is no innitialy selected item then the $_POST for the select will not be set

you can test with below

 <form action="" method="post" name="fi">
 <select name="ft">
  <option value="gggg">gggg</option>
  <option value="jjjjjjj">jjjjjj</option>
 </select>
<input name="submit" type="submit" value="submit"></form>
<?php        

if(isset($_POST['ft'])) echo"set";
?>