... To ease debugging the following example will produce an error GIF: . Example 1. ... function LoadGif ($imgname) { $im = @ImageCreateFromGIF ($imgname); /* Attempt to open */ if (!$im) { /* See if it failed */ $im = ImageCreate (150, 30); /* Create a blank image */ $bgc = ImageColorAllocate ($im, 255, 255, 255); $tc = ImageColorAllocate ($im, 0, 0, 0); ImageFilledRectangle ($im, 0, 0, 150, 30, $bgc); /* Output an errmsg */ ImageString($im, 1, 5, 5, "Error loading $imgname", $tc); } return $im; } . ...