QUERY_STRING help

[Anon]

SOMEONE PLEASE HELP! I'm doing a programming assignment for my PHP class and need to know how to differentiate between a PHP file run without parameters and one run with parameters. The page should display an HTML form if run without parameters and should process the form if run with parameters. Is it a simple if (!QUERY_STRING) statement or what? Can someone help me? Thanks everyone.

-Matt

[Anon]

All you need to do is check to see if the submit variable exists. That is if you create it in your form.

<input type="submit" name="submit" value="1">

That will cause a variable called $submit to appear in the script that your form calls.

Since you want to have the form call the script that it is currently in then you just need a clause at the top that does something like this.

if (isset($submit)) {
// process form here
}
else {
// display form here
}

[Anon]

yet another way to check would be to assign a 'name' to your submit button, and check for x and y co-ordinates along with $REQUEST_METHOD.

If you need to check for variables passed to the file via URL, you should indeed check the QUERY_STRING - but that doesn't cover hidden field variables.

-m.