<?php

function LoadPNG($imgname)

{

    /* Attempt to open */

    $im = @imagecreatefrompng($imgname);



    /* See if it failed */

    if(!$im)

    {

        /* Create a blank image */

        $im  = imagecreatetruecolor(150, 30);

        $bgc = imagecolorallocate($im, 255, 255, 255);

        $tc  = imagecolorallocate($im, 0, 0, 0);



        imagefilledrectangle($im, 0, 0, 150, 30, $bgc);



        /* Output an error message */

        imagestring($im, 1, 5, 5, 'Error loading ' . $imgname, $tc);

    }



    return $im;

}



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



$img = LoadPNG('bogus.image');



imagepng($img);

imagedestroy($img);

?>