<?php
//
// +----------------------------------------------------------------------+
// | PHP version 4.0 |
// +----------------------------------------------------------------------+
// | Copyright (c) 2004 |
// | Beijing Innovative Linkage Tech Ltd. |
// +----------------------------------------------------------------------+
// +----------------------------------------------------------------------+
// | Authors: 佟杰义<tongjy@dns.com.cn> |
// +----------------------------------------------------------------------+
//
// $Id: vImage.inc.php
//
/**
*
* @version v 1.0
* @author 佟杰义<tongjy@dns.com.cn>
* @access Public
*/
/**
* 图形的验证码的类（显示，传递验证码）
*/
class validateImage
{
var $x;
var $y;
var $numChars;
var $Code;
var $Width;
var $Height;
var $BG;
var $colTxt;
var $colBorder;
var $numCirculos;
function validateImage()
{
$this->x = $x;
$this->y = $y = "6";
$this->numChars = $numChars = "4";
$this->Code = $Code;
$this->Width = $Width = "80";
$this->Height = $Height = "25";
$this->BG = $BG = "255 255 255";
$this->colTxt = $colTxt = "0 0 0 0";
$this->Border = $colBorder = "100 100 100";
$this->numCirculos = $numCirculos = "800";
}
//Create base Image
function createImage()
{
//Create a image
$im = imagecreate ($this->Width, $this->Height) or die ("Cannot Initialize new GD image stream");
//Get the RGB color code
$colorBG = explode(" ", $this->BG);
$colorBorder = explode(" ", $this->Border);
$colorTxt = explode(" ", $this->colTxt);
//put the background color on the image
$imBG = imagecolorallocate ($im, $colorBG[0], $colorBG[1], $colorBG[2]);
//put the border on the image
$Border = ImageColorAllocate($im, $colorBorder[0], $colorBorder[1], $colorBorder[2]);
$imBorder = ImageRectangle($im, 0, 0, $this->Width-1,$this->Height-1, $Border);
//put the code color on the image
$imTxt = imagecolorallocate ($im, $colorTxt[0], $colorTxt[1], $colorTxt[2]);
//Drop 800 points
for($i = 0; $i < $this->numCirculos; $i++)
{
$imPoints = imagesetpixel($im, mt_rand(0,80), mt_rand(0,80), $Border);
}
//put the Code on image
for($i = 0; $i < $this->numChars; $i++)
{
//get $x's location
$this->x = 21 * $i;
//get the code
$this->Code.= (mt_rand(0,10));
$putCode = substr($this->Code, $i, "1");
//put the code;
$Code = imagestring($im, 5, $this->x, $this->y, $putCode,$imTxt);
}
return $im;
}
//Transfer the code to next page
function transferCode()
{
//get the code
$this->createImage();
$vCode = $this->Code;
return $vCode;
}
//display the image
function show()
{
header("Content-type:image/png");
Imagepng($this->createImage());
Imagedestroy($this->createImage());
}
}
if($HTTP_GET_VARS["show"] == "true")
{
//use and show it
$im = new validateImage;
$im->show();
}
?>
(非常全面的一个php技术网站, 有相当丰富的文章和源代码.)
上面的存为 vImage.inc.php
在同级目录，新建立个文件
<?php
/*
*这里放session类
*/
session_start();
session_register(vCode);
include_once("vImage.inc.php");
//use and test it
$im = new validateImage;
$vCode = $im->transferCode();
?>
<HTML>
<HEAD>
<TITLE> test </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<BODY>
<img src = "vImage.inc.php?show=true">
</BODY>
</HTML>
(非常全面的一个php技术网站, 有相当丰富的文章和源代码.)
| 
