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PHP Build a Simple PHP Application Adding a Contact Form Checking the Request Method

Erick Bongo
Erick Bongo
8,539 Points

The use of $_SERVER["REQUEST_METHOD"]

In the tutorial why did we use this

if ($_SERVER["REQUEST_METHOD"] == "POST")

Instead of this

if (ISSET($_POST["SUBMIT"])) 

Am not clear on the difference between the two if someone could explain the reason and logic behind both for me.

3 Answers

Blayne Holland
Blayne Holland
19,320 Points

My guess is that if for whatever reason $_POST['submit'] is null the form will still be procesed. I've always wonders this too to be honest.

Erick Bongo
Erick Bongo
8,539 Points

I think I see what your saying. So using $_POST["submit"] is only checking that single input within any given form, where as the request method will check them all.

Randy Hoyt, could you shed some light on this please and give a practical example of when one may be used over the other and the reasons why ?

Erick Bongo
Erick Bongo
8,539 Points

Ok I just did some tests. If I use the $_POST["submit"] then hit return when filling out the form it submits the form which isn't very good.

Also if I use var_dump[$_POST] nothing gets returned, does this mean the values in the form aint being stored in the variables when using $_POST["submit"] ??