optional arguments

//call the Increamentcounters() fn
Increamentcounters($IncreamentNavCounter = TRUE);

function Increamentcounters($ses_variable='',$IncreamentNavCounter = FALSE){
	global $ses_id,$seslog;
	$ses_variable = 'ses_counter';
	list($ses_counter, $error) = $seslog->SesVarRead($ses_id, $ses_variable);
	if ($error == '') {
		$ses_value = $ses_counter;
		$ses_value++;
		$seslog->SesVarUpdate($ses_id, $ses_variable, $ses_value);
		if ($IncreamentNavCounter) {
			//increament the nav_counter too
			$ses_variable = 'nav_counter';
			Increamentcounters($ses_variable);
		}
		return TRUE;
	}else {
		//we have an error
		return FALSE;
	}
}//close Increamentcounters() fn

//debugger variable values
$ses_variable=(boolean) true
$IncreamentNavCounter = (boolean) false

//my qn
am abit surprised by the results, i thought that the $IncreamentNavCounter would be set to true on calling the function while the $ses_variable value remains null