都是一模一樣抄下來(lái)的，輸出這個(gè)

image.finc.php

require_once?'string.func.php';
//通過(guò)GD庫(kù)做驗(yàn)證碼
//創(chuàng)建畫布
$width?=?80;$height?=?20;$image?=?imagecreatetruecolor($width,?$height);
$white?=?imagecolorallocate($image,?255,?255,?255);
$black?=?imagecolorallocate($image,?0,?0,?0);
//用填充矩形填充畫布
imagefilledrectangle($image,?1,?1,?$width-2,?$height-2,?$white);
$type?=?1;$length?=?4;$chars?=?bulidRandomString($type,?$length);
$sess_name?=?"verify";$_SESSION[$sess_name]?=?$chars;$fontfiles?=?array("SIMYOU.TTF","STHUPO.TTF","STKAITI.TTF","STLITI.TTF");
for($i?=?9;?$i?<?$length;?$i?++){????$size?=?mt_rand(14,?18);?
???$angle?=?mt_rand(-15,?15);
???????$x?=?5?+?$i?*?$size;?
??????????$y?=?mt_rand(20,?26);????
??????????$fountfile?=?"../fonts/".$fontfiles[mt_rand(0,?count($fontfiles)-1)];????
??????????$color?=?imagecolorallocate($image,?mt_rand(50,?90),?mt_rand(80,?200),?mt_rand(90,?180));????
??????????$text?=?substr($chars,?$i,?1);????
??????????imagettftext($image,?$size,?$angle,?$x,?$y,?$color,?$fontfiles,?$text);
??????????}
??????????header("content-type:image/gif");
??????????imagegif($image);imagedestroy($image);

string.func.php
function?bulidRandomString($type?=?1,?$length?=?4){????$type?=?1;????$length?=?4;????if?($type?==?1)?{????????$chars?=?join("",?range(0,?9));????}?elseif?($type?==?2)?{????????$chars?=?join("",?array_merge(range("a",?"z")?.?range("A",?"Z")));????}?elseif?($type?==?3)?{????????$chars?=?join("",?array_merge(range("a",?"z")?.?range("A",?"Z"),?range(0,?9)));????}????if?($length?>?strlen($chars))?{????????exit("字符串長(zhǎng)度不夠");????}????$chars?=?str_shuffle($chars);????substr($chars,?0,?$length);}