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 ?