zf实现验证码（页面验证码）

第一：搭建项目

项目名 captcha

Window+R启动 运行窗口，输入 cmd，启动Dos

>d:

>cd d:\wamp\www\test

>zf show version

>zf create project captcha

创建项目 captcha完毕。

第二：虚拟主机路径

http-vhosts.conf文件添加

#==================test captcha=================#
<VirtualHost *:80>
   DocumentRoot "D:/wamp/www/test/captcha/public"
   ServerName captcha.test.com

   # This should be omitted in the production environment
   SetEnv APPLICATION_ENV development
   
   <Directory "D:/wamp/www/test/captcha/public">
       Options Indexes MultiViews FollowSymLinks
       AllowOverride All
       Order allow,deny
       Allow from all
   </Directory>
   
</VirtualHost>

hosts文件添加

#=============test captcha======================#
127.0.0.1 captcha.test.com

浏览器直接 captcha.test.com指向captcha项目

第三：修改项目

captcha->application目录修改

改为modules模式（模块模式，分模块清晰）

modules->default->controllers

modules->default->views   （default是模块名）

删除原先的controllers 、views

修改配置文件application.ini

resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"

改为：

resources.frontController.moduleDirectory = APPLICATION_PATH "/modules"

第四：配置 静态文件目录地址常量

application.ini添加

constants.STATIC_SITE = http://captcha.test.com

因为静态文件放置在public目录下，而http://captcha.test.com指向public目录

Bootstrap.php解析application.ini

public function _initApplications(){$applications = new Zend_Config_Ini(APPLICATION_PATH."/configs/application.ini", APPLICATION_ENV);Zend_Registry::set('applications', $applications);return $applications;}

public function _initConstants(){$constants = Zend_Registry::get('applications')->constants;$constants = $constants ? $constants : array();foreach($constants as $constant => $value){defined($constant) || define($constant, $value);//defined() 函数检查某常量是否存在}}

第五：修改default->views->scripts->index->index.phtml文件

<label for="">验证码：</label><input type="text" class="inp_code" name='captcha'/><img src="<?php echo STATIC_SITE;?>/html/images/common/s.gif" class="code_img" /><!-- <?php echo STATIC_SITE;?>静态文件目录地址 --><a href="#" class='changeCaptcha'>看不清？换一个</a>

现在情况如图：

第六：验证码生成

1，添加助手文件目录

library->Ata->Controller->Action->Helpers目录下

2，修改Bootstrap.php文件，使助手文件Captcha.php能正常使用

public function _initHelper(){Zend_Controller_Action_HelperBroker::addPrefix('Ata_Controller_Action_Helpers');}

3，助手文件Captcha.php（验证码生成等方面）

Captcha.php（别人的代码直接拿来用的）

<?phpclass Ata_Controller_Action_Helpers_Captcha extends Zend_Controller_Action_Helper_Abstract{    public function img()    {        $session = new Zend_Session_Namespace('captcha');        $captcha = $session->content;        $img   = imagecreate(120, 40);        $bg    = imagecolorallocate($img, 255, 255, 128);        $fonts  = array(            APPLICATION_PATH.'/../library/Ata/Fonts/arial.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/arial.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/arial.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/arial.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/fakto9.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/fakto10.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/faktos.ttf',            APPLICATION_PATH.'/../library/Ata/Fonts/fpnf.ttf'        );        $grey  = imagecolorallocate($img, 128, 128, 128);        $black = imagecolorallocate($img, 0, 0, 0);        for($i=0;$i<25;$i++){            $x = rand(0,120);            $y = rand(0,40);            $size    = rand(20,100);            $angle_A = rand(0,360);            $angle_B = rand(0,360);            imagearc($img,  $x,  $y,  $size,  $size,  $angle_A, $angle_B, $grey);        }        for($i=0;$i<10;$i++){            $x = rand(0,120);            $y = rand(0,40);            $size   = rand(3,3);            imagefilledarc($img,  $x,  $y,  $size,  $size,  0, 360, $black, IMG_ARC_PIE);        }        for($i=0;$i<strlen($captcha);$i++){            $angle = rand(-10,10);            $rand  = rand(0,3);            imagettftext($img, 20, $angle, 17+25*$i, 35, $grey,  $fonts[$rand], $captcha[$i]);            imagettftext($img, 20, $angle, 15+25*$i, 32, $black, $fonts[$rand], $captcha[$i]);        }        header('Content-type: image/png');        imagepng($img);        imagedestroy($img);        return '';    }    public function set(){        $chars = "ABCDEFGHKMNPQRSTWXY3456789";        $captcha = '';        for($i=0;$i<4;$i++){            $captcha.= $chars[rand(0,strlen($chars)-1)];        };        $session = new Zend_Session_Namespace('captcha');        $session->content = $captcha;        return 1;    }    public function get(){        $session = new Zend_Session_Namespace('captcha');        return $session->content;    }    public function verify($captcha){        $session = new Zend_Session_Namespace('captcha');        return strtolower($session->content)==strtolower($captcha);    }}

3.1，用到session，配置application.ini

resources.session.name      = "HRS2ATAPSID"  
resources.session.gc_maxlifetime   = 43200    
resources.session.use_trans_sid   = 0     
resources.session.use_cookies    = 1     
resources.session.use_only_cookies   = 1     
resources.session.cookie_path    = "/"     
resources.session.remember_me_seconds  = 43200    
resources.session.cookie_domain   = ".test.com"    

memcache.server.0.host      = 172.16.26.234  
memcache.server.0.port      = 11221    
memcache.server.1.host      = 172.16.26.234  
memcache.server.1.port      = 11222    
memcache.lifetime           = 43200    
memcache.compressed         = 0

使用memcache存储session

3.2，ttf 文件放置位置

library->Ata->Fonts目录下
第七：写控制器 CaptchaController.php来调用助手文件Captcha.php（为页面js调用准备方法）

CaptchaController.php文件

<?phpclass CaptchaController extends Zend_Controller_Action{    public function imgAction(){        echo $this->getHelper('Captcha')->img();exit;    }    public function setAction(){        echo $this->getHelper('Captcha')->set();exit;    }    public function verifyAction(){        $captcha = $this->requestParam('captcha');        echo $this->getHelper('Captcha')->verify($captcha)?'y':'n';exit;    }}

第八：页面事件响应（刷新验证码）

加载jquery.js文件

<?php $this->headScript()->prependFile(STATIC_SITE."/html/scripts/common/jquery.js");?><?php echo $this->headScript();?>

写js方法

<script type="text/javascript">$(document).ready(function(){function setCaptchaImage(){//set验证码图片$.get('/captcha/set?'+Math.random(),//get请求 urlMath.random()随机数function(data){//返回的参数$('img.code_img').attr('src', '/captcha/img?'+Math.random());//替换验证图片});}$('.changeCaptcha').click(function(){//点击链接切换验证码setCaptchaImage();return false;});setCaptchaImage();//页面加载时就调用setCaptchaImage()方法，显示验证码});</script>

第九：最后如图