Question

Is there anyway to get all the key from a form that I post?

My problem found when I am showing some data that get from mysql DB.

When I am showing 2 records, I posted 2 of the record to another PHP file.
But I am afraid when I was posting the record, someone is adding another record to the DB

My PHP will get 3 posted data instead of 2 (The user only post 2, because he/she is not refresh the form)

+--------------------+--------------------+
|       Form         |         DB         |
|--------------------|--------------------|
|      2 records     |     2 records      |
|      2 records     |     3 records      | Someone Insert it
+--------------------+--------------------+

Of course I can get $_POST['key1'], $_POST['key2'].
But my code will search for $_POST['key1'], $_POST['key2'], $_POST['key3'], because there are 3 records in the DB.

Is there a way to check what key only that the user POST?

Answer 1

//print key1, key2
foreach ($_POST as $key => $value){
   echo $key; 
}