php imagecreate图片生成代码

f(isset($gd) && $gd==1
&& $txt)

{

header ("Content-type: image/png");

$txt = urldecode(phpcms_auth($txt, 'DECODE',
AUTH_KEY));

$imageX = strlen($txt)*9;

$im = @imagecreate ($imageX, 16) or die ("Cannot
Initialize new GD image stream");

$bgColor =
ImageColorAllocate($im,255,255,255);

$white=imagecolorallocate($im,234,185,95);

$font_color=imagecolorallocate($im,0x00,0x00,0x00);

$fontfile =
PHPCMS_ROOT."include/fonts/simfang.ttf";

if(file_exists($fontfile)
&&
!preg_match('/([a-z0-9@.])/',$txt))

{

$txt =
iconv("GB2312","UTF-8",$txt);

ImageTTFText($im, 10, 0, 0, 12,
$font_color, $fontfile, $txt);

}

else

{

$fonttype =
intval($fonttype);

imagestring ($im, $fonttype, 0,
0,$txt, $font_color);

}

imagepng ($im);

imagedestroy ($im);

}