Validating radio buttons and checkbox in php

// Validating radio buttons and checkbox in php


<?php
if(isset($_REQUEST['st_submit'])){ // <input type="submit" name="st_submit" />
	if(isset($_REQUEST['st_radio'])){  // <input type="radio" name="st_radio" />
		$st_radio = $_REQUEST['st_radio']; // <input type="radio" name="st_radio" />
	}

	if(isset($_REQUEST['st_checkbox'])){  // <input type="checkbox" name="st_checkbox" />
		$st_checkbox = $_REQUEST['st_checkbox'];  // <input type="checkbox" name="st_checkbox" />
	}
}

?>