3 possible reasons for the solution to the error in DEDECMS background verification code and unable to perform normal verification

This article mainly introduces the backend of DEDECMSVerification code 3 possible reasons and solutions for errors that cannot be verified normally. Friends in need can refer to the download address of

dedecms template : m.sbmmt.com/xiazai/code/dedecms

I often see many people posting that they can’t enter the backend after using the site built by DreamWeaver. The verification code is obviously correct, but It says the verification code is incorrect. Today I spent some time sorting out some related methods, mainly the following ones:
Solution 1:

data/session The save failed because The directory does not have write permission (permission 777), which can be modified by using the FTP connection tool or entering online file management;
Solution 2:

You can cancel the verification code, the specific operation method As follows, it is divided into two steps:

1. Open dede/login.php and find:

The code is as follows:

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

is replaced with:

The code is as follows:

if( false)

2. Remove the specific HTML code of the following verification code in the template dede/templets/login.htm:

The code is as follows:

<li><span>验证码：</span> 
<input name="validate" type="text" id="vdcode" style=&#39;
width
:50px;
text-transform
:uppercase;&#39; class="text" /> 
<img id="vdimgck" src="../
include
/vdimgck.php" alt="看不清？点击更换" align="absmid
dl
e" style="cursor:pointer" 
onclick
="this.src=this.src+&#39;?&#39;" /> 
</li>

Solution 3:

If the above two methods do not work, you can also check whether the space is full, because if the space is full, then generate The session file cannot be found.

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