How to add verification code in custom form in DedeCMS

How to add verification code in the custom form of DedeCMS?

Dreamweaver DedeCMS adds verification code in the custom form

Recommended learning: 梦weavercms

1. First enter the DedeCMS backend Generate custom forms.

2. Add verification code to the custom form template, as follows:

<input name="validate" type="text" id="vdcode" style="text-transform:uppercase;" size="8"/> 
<img id="vdimgck" align="absmiddle" onClick="this.src=this.src+&#39;?&#39;" 
style="cursor: pointer;" alt="看不清？点击更换" src="../include/vdimgck.php"/>  
<a href="javascript:vide(-1);" onClick="changeAuthCode();">看不清？ </a>

3. Add JS code to the current page, as follows:

<script type="text/javascript" language="javascript">
//验证码 
function changeAuthCode() { 
    var num =     new Date().getTime();
    var rand = Math.round(Math.random() * 10000);
    num = num + rand;
    $(&#39;#ver_code&#39;).css(&#39;visibility&#39;,&#39;visible&#39;);
    if ($("#vdimgck")[0]) {
        $("#vdimgck")[0].src = "../include/vdimgck.php?tag=" + num;
    }
    return false;    
}
</script>

4. Modify the order Process the page, open the /plus/diy.php file in the website root directory, and add the verification code to around line 61. As follows:

if(!empty($dede_fields))
{
 $validate = empty($validate) ? '' : strtolower(trim($validate)); 
 $svali = strtolower(GetCkVdValue()); 
if(($validate=='' || $validate != $svali) && preg_match("/6/",$safe_gdopen)){
 ResetVdValue(); 
 ShowMsg('验证码不正确!',$dede_add,0,1000); 
 exit; 
}

Note: My custom form is proposed separately to make a template page and is called using columns.

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