A php file as img src

Question

i want to print a image by using a img tag which src is a php file, the script will also process some action at server scirpt. Anyone have an example code?

here is my test code but no effect

img.html

<img src="visitImg.php" />

visitImg.php

<?

header('Content-Type: image/jpeg');

echo "<img src=\"btn_search_eng.jpg\" />";

?>

Answer 1

Use readfile:

<?php
header('Content-Type: image/jpeg');
readfile('btn_search_eng.jpg');
?>

Answer 2

If you are going to use header('Content-Type: image/jpeg'); at the top of your script, then the output of your script had better be a JPEG image! In your current example, you are specifying an image content type and then providing HTML output.

Answer 3

What you're echoing is HTML, not the binary data needed to generate a JPEG image. To get that, you'll need to either read an external file or generate a file using PHP's image manipulation functions.