<?php
    function error_gif($str, $font = 2) {

	$lines = split("\n", $str);
	$num_row = sizeof($lines);

	while(list(,$ln) = each($lines))
	    $num_col = (strlen($ln) > $num_col) ? strlen($ln) : $num_col;

	$im = ImageCreate($num_col*ImageFontWidth($font),
		      $num_row*ImageFontHeight($font));

	$bgc = ImageColorAllocate($im, 255, 255, 255);
	$fgc  = ImageColorAllocate($im, 0, 0, 0);

	ImageFilledRectangle($im, 0, 0, $num_cols*ImageFontWidth($font),
				$num_row*ImageFontHeight($font),$bgc);

	$i = 0;
	while($i < sizeof($lines)) {
	    ImageString($im, $font, 0, $i*ImageFontHeight($font),
		ereg_replace("\r", "", ereg_replace("\n", "", $lines[$i])),
		$fgc);
	    $i++;
	}

	Header( "Content-type: image/gif");
	ImageGif($im);
    }
?>