静态验证码调用1
直接使用thinkPHP提供的（captcha_img）函数用于img标签的src属性。
静态验证码调用2
给img标签绑定验证码点击切换的监听事件。
静态验证码调用3
通过表单生成函数（DcBuildForm）适用于表单内的验证码。
控制器源码（apps/example/controller/Captcha.php）
复制
<?php
namespace app\example\controller;
use app\common\controller\Front;
class Captcha extends Front
{
public function _initialize()
{
parent::_initialize();
}
public function index()
{
//定义模板表单变量
$this->assign('forms',[
'name' => 'example/captcha/index',
'class' => 'bg-white',
'action' => DcUrl('example/captcha/save'),
'method' => 'post',
'submit' => lang('submit'),
'reset' => lang('reset'),
'close' => false,
'ajax' => false,
'disabled' => false,
'callback' => false,
'data' => false,
'items' => DcFormItems([
'captcha' => [
'type' => 'captcha',
'required' => true,
'style' => 'max-width:145px',
'class' => 'form-group row',
'class_left' => 'col-12 d-none',
'class_right' => 'col-12',
'class_right_control' => 'form-control',
],
]),
]);
//加载模板
return $this->fetch();
}
public function save()
{
return $this->success('ok');
}
}
模板源码（apps/example/theme/default/captcha/index.tpl）
复制
{extend name="apps/common/view/front.tpl" /}
<!--meta-->
{block name="header_meta"}
<title>DaiCuo验证码实例－{:config('common.site_name')}</title>
<meta name="keywords" content="DaiCuo验证码,动态验证码,图形验证码" />
<meta name="description" content="呆错后台管理框架验证码组件（静态验证码与动态验证码）开发实例。" />
{/block}
<!--header-->
{block name="header"}
{include file="apps/common/view/widget/header.tpl" /}
{/block}
<!--main-->
{block name="main"}
<div class="container pt-2">
<div class="card mb-3">
<div class="card-header font-weight-bold">静态验证码调用1</div>
<div class="card-body">
<blockquote>直接使用thinkPHP提供的（captcha_img）函数用于img标签的src属性。</blockquote>
<p class="card-text">{:captcha_img()}</p>
</div>
</div>
<div class="card mb-3">
<div class="card-header font-weight-bold">静态验证码调用2</div>
<div class="card-body">
<blockquote>给img标签绑定验证码点击切换的监听事件。</blockquote>
<p class="card-text"><img src="{:captcha_src()}" alt="captcha" data-toggle="captcha"/></p>
</div>
</div>
<div class="card mb-3">
<div class="card-header font-weight-bold">静态验证码调用3</div>
<div class="card-body">
<blockquote>通过表单生成函数（DcBuildForm）适用于表单内的验证码。</blockquote>
<p class="card-text">{:DcBuildForm($forms)}</p>
</div>
</div>
<div class="card mb-3">
<div class="card-header d-flex justify-content-between">
<font>控制器源码（apps/example/controller/Captcha.php）</font>
<a class="font-weight-bold text-purple" href="javascript:;" data-toggle="copy" data-clipboard-target="#controller">复制</a>
</div>
<div class="card-body" id="controller">
{:exampleCode('apps/example/controller/Captcha.php')}
</div>
</div>
<div class="card mb-3">
<div class="card-header d-flex justify-content-between">
<font>模板源码（apps/example/theme/default/captcha/index.tpl）</font>
<a class="font-weight-bold text-purple" href="javascript:;" data-toggle="copy" data-clipboard-target="#view">复制</a>
</div>
<div class="card-body" id="view">
{:exampleCode('apps/example/theme/default/captcha/index.tpl')}
</div>
</div>
</div>
{/block}
<!--footer-->
{block name="footer"}
{include file="apps/common/view/widget/footer.tpl" /}
{/block}