/* 检查一下用户设定了那些值？ */
if ($CGIVars[ "text"])
$text = $CGIVars[ "text"];
if ($CGIVars[ "sz"])
$sz = $CGIVars[ "sz"];
if ($CGIVars[ "font"])
$Fontname = $CGIVars[ "font"];
$Font_File = $BaseFontDir . $Fontname . ".TTF";
if ($CGIVars[ "xpad"])
$xpad = $CGIVars[ "xpad"];
if ($CGIVars[ "ypad"])
$ypad = $CGIVars[ "ypad"];
if ($CGIVars[ "fgcolor"])
$fgcolor = $CGIVars[ "fgcolor"];
$fg = GetColor($fgcolor);
if ($CGIVars[ "bgcolor"])
$bgcolor = $CGIVars[ "bgcolor"];
$bg = GetColor($bgcolor);
/* 输出文件头类型 */
Header( "Content-type: image/gif");
/* 得到所选字体的大小 */
$size = imagettfbbox($sz,0, $Font_File,$text);
/* 得到文字的高和宽*/
$dx = abs($size[2]-$size[0]);
$dy = abs($size[5]-$size[3]);
/* 初始化一幅图片 */
$im = imagecreate($dx+$xpad,$dy+$ypad);
$background = ImageColorAllocate($im, $bg[ "red"], $bg[ "green"], $bg[ "blue"]);
$foreground = ImageColorAllocate($im, $fg[ "red"], $fg[ "green"], $fg[ "blue"]);
$black = ImageColorAllocate($im, 0,0,0);
$white = ImageColorAllocate($im, 255,255,255);
/* 开始创建图片 */
ImageRectangle($im,0,0,$dx+$xpad-1,$dy+$ypad-1,$black);
ImageRectangle($im,0,0,$dx+$xpad,$dy+$ypad, $white);
ImageTTFText($im, $sz, 0, (int)($xpad/2)+1, $dy+(int)($ypad/2), $black, $Font_File, $text);
ImageTTFText($im, $sz, 0, (int)($xpad/2), $dy+(int)($ypad/2)-1, $foreground, $Font_File, $text);
/* 把图片发送给客户端 */
ImageGif($im);
/* 创建了图片变量，当然要释放内存了 */
ImageDestroy($im);
?>