How to remove elements from the $_POST array?

Question

I want to insert a record into a MySQL database table from a formulaire. The problem is that there is a field that is not in the table's columns in the $_POST variable but it's displayed as a textfield in the formulaire. I insert the fields values by this way :

$newRecord->insert($_POST); // we created a generic function insert($array) to insert records

So how to remove an element of the $_POST ?

Answer 1

simply go:

unset($_POST['field']);

Answer 2

If $_POST contains user-entered data then I really hope that insert function is sanitising the data. If not you're just asking for a SQL injection attack.