<?php
/**
 * Some useful functions
 */

function getRequestParameter($paramName) {
	if (isset($_REQUEST[$paramName])) {
		return $_REQUEST[$paramName];
	}
	return NULL;
}

function str_startswith($str, $with) {
	if (($str == NULL) && ($with == NULL)) {
		return true;
	}
	if (strlen($with) > strlen($str)) {
		return false;
	}
	return (substr_compare($str, $with, 0, strlen($with)) == 0);
}