dedecms自定义表单增加验证码的方法分享
<p><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'>利用织梦内容管理系统（DedeCMS）自带提供的自定义表单功能即可满足大多数的此类需求。 </span><br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'> 通过给自定义表单加入验证码的功能，可以防止一些用户恶意提交。 </span><br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'> 1、先进入DedeCMS后台生成自定义表单。 </span><br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'> 2、在自定义表单模板中添加验证码代码，如下： </span></p>
<div class="msgheader" style='margin: 3px auto 0px; padding: 0px 3px; outline: none; line-height: 21.6px; clear: both; border-width: 1px; border-style: solid; border-color: rgb(0, 153, 204); background: rgb(246, 251, 255); overflow: hidden; font-family: tahoma, arial, "Microsoft YaHei";'>
<p class="right">
<span><u>复制代码</u></span></p>
<p>
代码如下:</p>
</div>
<p class="msgborder" style='margin: 0px auto 3px; padding: 0px 3px; outline: none; line-height: 25.2px; font-size: 14px; clear: both; border-right: 1px solid rgb(0, 153, 204); background: rgb(221, 237, 251); overflow: hidden; border-left: 1px solid rgb(0, 153, 204); word-break: break-all; border-bottom: 1px solid rgb(0, 153, 204); word-wrap: break-word; font-family: tahoma, arial, "Microsoft YaHei";'>
<br>
<input name="validate" type="text" id="vdcode" size="8"/> <br>
<img id="vdimgck" align="absmiddle" onClick="this.src=this.src+'?'" />
<span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'>3、在当前页添加JS代码，如下： </span></p>
<div class="msgheader" style='margin: 3px auto 0px; padding: 0px 3px; outline: none; line-height: 21.6px; clear: both; border-width: 1px; border-style: solid; border-color: rgb(0, 153, 204); background: rgb(246, 251, 255); overflow: hidden; font-family: tahoma, arial, "Microsoft YaHei";'>
<p class="right">
<span><u>复制代码</u></span></p>
<p>
代码如下:</p>
</div>
<p class="msgborder" style='margin: 0px auto 3px; padding: 0px 3px; outline: none; line-height: 25.2px; font-size: 14px; clear: both; border-right: 1px solid rgb(0, 153, 204); background: rgb(221, 237, 251); overflow: hidden; border-left: 1px solid rgb(0, 153, 204); word-break: break-all; border-bottom: 1px solid rgb(0, 153, 204); word-wrap: break-word; font-family: tahoma, arial, "Microsoft YaHei";'>
<br>
</p>
<p>
<br style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'><span style='font-family: tahoma, arial, "Microsoft YaHei"; font-size: 14px;'>4、修改订单处理页面，打开网站根目录/plus/diy.php文件， 添加验证代码到第61行左右位置。如下： </span></p>
<div class="msgheader" style='margin: 3px auto 0px; padding: 0px 3px; outline: none; line-height: 21.6px; clear: both; border-width: 1px; border-style: solid; border-color: rgb(0, 153, 204); background: rgb(246, 251, 255); overflow: hidden; font-family: tahoma, arial, "Microsoft YaHei";'>
<p class="right">
<span><u>复制代码</u></span></p>
<p>
代码如下:</p>
</div>
<p class="msgborder" style='margin: 0px auto 3px; padding: 0px 3px; outline: none; line-height: 25.2px; font-size: 14px; clear: both; border-right: 1px solid rgb(0, 153, 204); background: rgb(221, 237, 251); overflow: hidden; border-left: 1px solid rgb(0, 153, 204); word-break: break-all; border-bottom: 1px solid rgb(0, 153, 204); word-wrap: break-word; font-family: tahoma, arial, "Microsoft YaHei";'>
<br>
if(!empty($dede_fields)) <br>
{ <br>
$validate = empty($validate) ? '' : strtolower(trim($validate)); $svali = strtolower(GetCkVdValue()); <br>
if(($validate=='' || $validate != $svali) && preg_match("/6/",$safe_gdopen)){ ResetVdValue(); <br>
ShowMsg('验证码不正确!',$dede_add,0,1000); <br>
exit; <br>
} </p>
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