Check if form has been submitted?

[eluser]built2fall[/eluser]
Here's two other methods to determine if a form has been submitted:

Code:

if ($this->input->server('REQUEST_METHOD') === 'POST')
{
// do something
}

OR

if ($this->input->post('hidden_form_field'))
{
// do something
}

Checking for a existence of a hidden form in POST, this method, and counting the size of the POST array are probably the most foolproof methods. I didn't verify this but going by what I've read, IE allows for form submissions by hitting enter without focus on the submit button, so in that case checking for $_POST['submit-btn'] would fail. Also if you enabled GET, checking the REQUEST_METHOD wouldn't work in the case of someone not submitting the form and just typing the URL with the query string.