<?php
		function show_fruit($timestamp) {
		        if($timestamp >= strtotime("-12 hours")) {
		                return 'images/lime.png';
		        } else if($timestamp >= strtotime("-24 hours")) {
		                return 'images/lemon.png';
		        } else if($timestamp >= strtotime("-38 hours")) {
		                return 'images/pom.png';
		        } else {
		                // the final one if it doesn't suit the others
		                return 'images/strawberry.png';
		        }
		}
		?>