复制代码 代码如下:

<?php

Classcode

{

var$width=160;//图片的宽

var$hight=40;//图片的高

var$image;

var$red=223;//图片的RGB颜色

var$green=225;//红

var$blue=227;//绿

var$pix=227;//蓝

var$pixcolor;//杂色颜色;

var$pixred=242;//红

var$pixgreen=168;//绿

var$pixblue=162;//蓝

var$txt=null;//验证码文字

var$txtcode=null;

var$txtsub=null;

var$pixnum=300;//杂点数量

var$i=0;

var$widthpx=0;

var$highty=0;

var$txtreg=50;

var$txtgreen=30;

functioncreateimage()//创建一张图并填色

{

$this->image=imagecreate($this->width,$this->hight);

$this->color=imagecolorallocate($this->image,$this->red,$this->green,$this->blue);

returnimagefill($this->image,0,0,$this->color);

}

functioncreatepix()//干扰因素

{

for($this->i=1;$this->i<$this->pixnum;$this->i++)

{

$this->widthpx=rand(0,$this->width);

$this->highty=rand(0,$this->hight);

$this->pixcolor=imagecolorallocate($this->image,$this->pixred,$this->pixgreen,$this->pixblue);

imagesetpixel($this->image,$this->widthpx,$this->highty,$this->pixcolor);

}

}

functiongettxt()//创建验证码文字

{

$this->txt=array("我","爱","你","叶","就","慧","明","发","真","的","很","想","不","知","到","为","什","么","就","是","忘","不","了","你","也","许","上","辈","欠","钱");

for($this->i=0;$this->i<6;$this->i++)

{

$this->sub=$this->txt[rand(0,29)];

$this->txtcode.=$this->sub;

}

$this->txtcode=iconv("GB2312","UTF-8",$this->txtcode);

$_SESSION["code"]=$this->txtcode;//产生的验证ID

}

functioncreatestring()//创建验证码图片

{

imagettftext($this->image,20,5,0,40,$this->pixcolor,"C:WINDOWSFontssimsun.ttc",$this->txtcode);

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

returnimagepng($this->image);

imagedestroy($this->image);

}

functiongetcodeimage()//获得验证码图片

{

$this->createimage();

$this->gettxt();

$this->createpix();

$this->createstring();

}

}

?>

<?php

session_start();

$text=newcode;

$text->createimage();

$text->gettxt();

$text->createpix();

$text->createstring();

?>