176 lines
6.9 KiB
PHP
176 lines
6.9 KiB
PHP
<?php
|
||
|
||
/**
|
||
* 生成图像验证码
|
||
*
|
||
* 代码来自 ThinkPHP 的 Lib/ORG/Util/Image.class.php 文件，特此对 ThinkPHP 团队表示感谢 :)
|
||
*
|
||
* Custom
|
||
*
|
||
* LICENSE:
|
||
*
|
||
* @category Custom
|
||
* @package Custom
|
||
* @subpackage Controller
|
||
* @copyright Copyright (c) KenJi
|
||
* @license
|
||
* @version
|
||
*/
|
||
|
||
/**
|
||
* Zend_Controller_Plugin_Abstract
|
||
*/
|
||
//require_once 'Zend/Controller/Plugin/Abstract.php';
|
||
//require_once 'Zend/Session/Namespace.php';
|
||
|
||
class Custom_Controller_Plugin_ImgCode extends Zend_Controller_Plugin_Abstract
|
||
{
|
||
|
||
/**
|
||
+----------------------------------------------------------
|
||
* 生成图像验证码
|
||
+----------------------------------------------------------
|
||
* @static
|
||
* @access public
|
||
+----------------------------------------------------------
|
||
* @param string $length 位数
|
||
* @param string $mode 类型 0 字母 1:数字，2：大写字母 3:小写字母 4:以上混合形式
|
||
* @param string $type 图像格式
|
||
* @param string $width 宽度
|
||
* @param string $height 高度
|
||
+----------------------------------------------------------
|
||
* @return string
|
||
+----------------------------------------------------------
|
||
* @throws ThinkExecption
|
||
+----------------------------------------------------------
|
||
*/
|
||
function image2($length=4,$mode=4,$type='png',$width=50,$height=25)
|
||
{
|
||
$randval = $this->rand_string($length,$mode);//生成随机数
|
||
|
||
|
||
//$authCode = new Zend_Session_Namespace('Auth_Code');
|
||
//$authCode->imagecode = $randval;//生成session
|
||
|
||
$_SESSION['vdcodes'] = strtolower($randval);
|
||
|
||
$width = ($length*9+10)>$width?$length*9+10:$width;
|
||
if ( $type!='gif' && function_exists('imagecreatetruecolor')) {
|
||
$im = @imagecreatetruecolor($width,$height);
|
||
}else {
|
||
$im = @imagecreate($width,$height);
|
||
}
|
||
$r = Array(225,255,255,223);
|
||
$g = Array(225,236,237,255);
|
||
$b = Array(225,236,166,125);
|
||
$key = mt_rand(0,3);
|
||
|
||
$backColor = imagecolorallocate($im, $r[$key],$g[$key],$b[$key]); //背景色（随机）
|
||
$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
|
||
$pointColor = imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255)); //点颜色
|
||
|
||
@imagefilledrectangle($im, 0, 0, $width - 1, $height - 1, $backColor);
|
||
@imagerectangle($im, 0, 0, $width-1, $height-1, $borderColor);
|
||
$stringColor = imagecolorallocate($im,mt_rand(0,200),mt_rand(0,120),mt_rand(0,120));
|
||
// 干扰
|
||
for($i=0;$i<10;$i++){
|
||
$fontcolor=imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
|
||
imagearc($im,mt_rand(-10,$width),mt_rand(-10,$height),mt_rand(30,300),mt_rand(20,200),55,44,$fontcolor);
|
||
}
|
||
for($i=0;$i<25;$i++){
|
||
$fontcolor=imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
|
||
imagesetpixel($im,mt_rand(0,$width),mt_rand(0,$height),$pointColor);
|
||
}
|
||
|
||
@imagestring($im, 5, 5, 3, $randval, $stringColor);
|
||
$this->output($im,$type);
|
||
}
|
||
|
||
// 更复杂的验证码
|
||
function image3($length=4,$type='png',$width=50,$height=60,$fontface='fpnf.ttf',$verifyName='verify') {
|
||
$code = $this->rand_string($length,4);
|
||
$width = ($length*25)>$width?$length*25:$width;
|
||
$authCode = new Zend_Session_Namespace('Auth_Code');
|
||
$authCode->imagecode = $randval;
|
||
|
||
$im=imagecreatetruecolor($width,$height);
|
||
$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
|
||
$bkcolor=imagecolorallocate($im,250,250,250);
|
||
imagefill($im,0,0,$bkcolor);
|
||
@imagerectangle($im, 0, 0, $width-1, $height-1, $borderColor);
|
||
// 干扰
|
||
for($i=0;$i<15;$i++){
|
||
$fontcolor=imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
|
||
imagearc($im,mt_rand(-10,$width),mt_rand(-10,$height),mt_rand(30,300),mt_rand(20,200),55,44,$fontcolor);
|
||
}
|
||
for($i=0;$i<255;$i++){
|
||
$fontcolor=imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
|
||
imagesetpixel($im,mt_rand(0,$width),mt_rand(0,$height),$fontcolor);
|
||
}
|
||
if(!is_file($fontface)) {
|
||
$fontface = dirname(__FILE__)."/".$fontface;
|
||
}
|
||
for($i=0;$i<$length;$i++){
|
||
$fontcolor=imagecolorallocate($im,mt_rand(0,120),mt_rand(0,120),mt_rand(0,120)); //这样保证随机出来的颜色较深。
|
||
$codex= substr($code,$i,1);
|
||
imagettftext($im,mt_rand(16,20),mt_rand(-60,60),40*$i+20,mt_rand(30,35),$fontcolor,$fontface,$codex);
|
||
}
|
||
$this->output($im,$type);
|
||
}
|
||
|
||
function output($im,$type='png')
|
||
{
|
||
header("Content-type: image/".$type);
|
||
$ImageFun='Image'.$type;
|
||
$ImageFun($im);
|
||
imagedestroy($im);
|
||
}
|
||
|
||
/**
|
||
+----------------------------------------------------------
|
||
* 产生随机字串，可用来自动生成密码 默认长度6位 字母和数字混合
|
||
+----------------------------------------------------------
|
||
* @param string $len 长度
|
||
* @param string $type 字串类型
|
||
* 0 字母 1 数字 其它 混合
|
||
* @param string $addChars 额外字符
|
||
+----------------------------------------------------------
|
||
* @return string
|
||
+----------------------------------------------------------
|
||
*/
|
||
function rand_string($len=6,$type='',$addChars='') {
|
||
$str ='';
|
||
switch($type) {
|
||
case 0:
|
||
$chars='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.$addChars;
|
||
break;
|
||
case 1:
|
||
$chars= str_repeat('0123456789',3);
|
||
break;
|
||
case 2:
|
||
$chars='ABCDEFGHIJKLMNOPQRSTUVWXYZ'.$addChars;
|
||
break;
|
||
case 3:
|
||
$chars='abcdefghijklmnopqrstuvwxyz'.$addChars;
|
||
break;
|
||
default :
|
||
// 默认去掉了容易混淆的字符oOLl和数字01，要添加请使用addChars参数
|
||
$chars='ABCDEFGHIJKMNPQRSTUVWXYZabcdefghijkmnpqrstuvwxyz23456789'.$addChars;
|
||
break;
|
||
}
|
||
if($len>10 ) {//位数过长重复字符串一定次数
|
||
$chars= $type==1? str_repeat($chars,$len) : str_repeat($chars,5);
|
||
}
|
||
if($type!=4) {
|
||
$chars = str_shuffle($chars);
|
||
$str = substr($chars,0,$len);
|
||
}else{
|
||
// 中文随机字
|
||
for($i=0;$i<$len;$i++){
|
||
$str.= substr($chars, floor(mt_rand(0,mb_strlen($chars,'utf-8')-1)),1);
|
||
}
|
||
}
|
||
return $str;
|
||
}
|
||
|
||
} |