PHP的验证码的类

这个是一个PHP验证码类,自己写的.这个类是写这么多类以来,调试调了最久的!好辛苦呀!

因为不知道为什么,如果是用类来显示图片.你单单用类的方式来调是不显示错误的,只是图片不显示出来而已.所以我自己又多写了一个函数的验证码,这样来调试.累罗~~~~不过还是写完了~~~~哈哈哈~~~~~~

<?php

Class code

{

var $width =80; //图片的宽

var $hight =50; //图片的高

var $image;

var $red =69; //图片的RGB颜色

var $green =188; //红

var $blue =105 ;//绿

var $pix =100 ;//蓝

var $pixcolor; //杂色颜色;

var $pixred = 255 ; //红

var $pixgreen = 255;//绿

var $pixblue = 255; //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=20;

var $txtgreen=30;

function createimage() //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);

return imagefill($this->image,0,0,$this->color);

}

function createpix() //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);

}

}

function gettxt() //创建验证码文字

{

$this->txt = array("A","B","C","D","E","F","G","H","I","M","Y","a","b","e","u","v","w","x","y","z","1","2","3","4","5","6","7","8","9","0");

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

{

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

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

}

session_start();

$_SESSION["code"] = $this->txtcode;

}

function createstring() //创建验证码图片

{

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

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

return imagepng($this->image);

imagedestroy($this->image);

}

function getcodeimage()//获得验证码图片

{

$this->createimage();

$this->createpix();

$this->gettxt();

$this->createstring();

}

}

?>

<?php

$text = new code;

$text->createimage();

$text->gettxt();

$text->createpix();

$text->createstring();

?>