load a php image using src

Question

Is it possible to load a image using:

<img src="image.php?image_id=1">

?

for image.php:

$image_id = $_GET['image_id']; 
echo "image".$image_id.".png"; 

Answer 1

you must return a valid image, use file_get_contents or readfile for get the conent of image then output to browser

 header("Content-Type:image/png");

    $image_id = $_GET['image_id']; 

    if(is_file($file = "image".$image_id.".png") ||  is_file($file = "no_image.png"))
        readfile($file);