<?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); ?>