<?php
header("Cache-Control: private, max-age=10800, pre-check=10800");
header("Pragma: private");
// Set to expire in 2 days
header("Expires: " . date(DATE_RFC822,strtotime(" 2 day")));
if(isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])){
// if the browser has a cached version of this image, send 304
header('Last-Modified: '.$_SERVER['HTTP_IF_MODIFIED_SINCE'],true,304);
exit;
}
// Generate an image below either using GD or a file reader such as:
// readfile(), fread(), file_get_contents(), etc.
$path = "/path/to/my/image.jpg";
$info = pathinfo($path);
switch($info["extension"]){
case "jpg":
$mime = "image/jpeg";
break;
case "gif":
$mime = "image/gif";
break;
case "png":
$mime = "image/png";
break;
}
header("content-type: $mime");
readfile($path);
?>
