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();
?>