The example in this article describes the solution to invalid PHP session verification. Share it with everyone for your reference. The specific method is as follows:

1. Problem

I spent a long time configuring the apache+php environment today. Later, I succeeded, but I found that the verification code image could be generated. During the login verification, I found that the session was empty and had no value.

2. Solution

Environment: apache+php

The program code is as follows:

<input name="username" type="text" class="input" id="username">
<input name="password" type="password" class="input" id="password">
<input name="ver" type="text" class="input1" id="ver" size="5">
<img src="../inc/ver.php" onclick="this.src=&#39;../inc/ver.php&#39;;" />

Process the file after submission. This post.php file

if($_SESSION['ssioner']!=$ssever){
echo("<script>alert(&#39;驗(yàn)證碼必須由4位數(shù)字組成!&#39;);history.back();</script>");exit;  
}

It turns out that it keeps prompting that the verification code must consist of 4 digits, and then prints it out. session:

echo $_SESSION['ssioner'];
exit;

has always been empty, so I thought of a session file directory configured in the php environment. Now we find the php.ini configuration file and find
upload_tmp_dir
and find that this directory is
upload_tmp_dir="D:www.php. cntp"
I checked my D drive and found that there was only the www.miracleart.cn file but no tp directory, so the problem was found. So I created a tp directory, restarted apache and found that there was the sess_i40gl0p4hfep5r69j67o1k26d01 file in the tp directory, so Logged in again and found success.

I hope this article will be helpful to everyone’s PHP programming design.

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