Dealing with CodeIgniter's incorrect defaults

gistfile1.aw

/*/*
 * CodeIgniter likes to return FALSE instead of NULL, which means
 * that you need to check for FALSE before sending things of to
 * the DB - amonsgt other issues - as well as the fact that FALSE
 * is actually a value and not a valid "I dont know" response.
 */

// NULL default in PHP 5.3

$foo = $this->input->post('foo') ?: NULL;

// NULL default in PHP 5.2

$foo = $this->input->post('foo') ? $this->input->post('foo') : NULL;

// NULL default proposal in CodeIgniter 3.0

$foo = $this->input->post('foo');

/*
 * Seems trivial, but this is how pretty much everyone else in all of 
 * PHP land does it.
 */