if the line starts with a narrow character, for example: "1"
function new_imagettfbbox($size, $angle, $fontfile, $text)
{
$first = substr($text, 0, 1);
$sub = substr($text, 1);
switch ($first)
{
case '1':
$text = '0' . $sub;
break;
}
return imagettfbbox($size, $angle, $fontfile, $text);
}