织梦搜索添加验证码功能

• 织梦搜索添加验证码实现教程

验证码：<input type="text" name="validate"><img src="{dede:global.cfg_cmspath/}/include/vdimgck.php" align="absmiddle" onclick="this.src='{dede:global.cfg_cmspath/}/include/vdimgck.php?tag='+Math.random();" style="cursor:pointer;">

$mid = (isset($mid) && is_numeric($mid)) ? $mid : 0;

$validate = empty($validate) ? '' : strtolower(trim($validate));

$svali = strtolower(GetCkVdValue());

if($validate=='' || $validate != $svali)

{

ResetVdValue();

ShowMsg('验证码不正确!',$_SERVER["HTTP_REFERER"],0,1000);

exit();

}