<?php
require_once?'string.fuc.php';

$width?=?90;
$height?=?30;
$image?=?imagecreatetruecolor($width,?$height);?//?創建畫布
$white?=?imagecolorallocate($image,?255,?255,?255);?//?設置顏色
$black?=?imagecolorallocate($image,?0,?0,?0);
//?填充一個矩形填充畫布
imagefilledrectangle($image,?1,?1,?$width?-?2,?$height?-?2,?$white);
/*header("content-type:image/gif");
imagegif($image);
imagedestroy($image);*/

$type=2;
$length=5;
$chars?=?buildRondString($type,$length);
//echo?$chars;

imagettftext($image,?20,?0,?10,?20,?$black,?"simhei.ttf",?$chars);

header("content-type:image/png");
imagepng($image);
imagedestroy($image);

單獨的輸出上面的畫布和個那個隨機字符串都能得到?? 但加上imagettftext（）后個看不到圖片了? 這是為什么