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Notice: Undefined variable: _SESSION in “” on line 9 [duplicate]

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抹茶落季

2020-12-06 04:56
Add
```
session_start();
```
at the beginning of your page before any HTML

You will have something like :
```
<?php session_start();
include("inc/incfiles/header.inc.php")?>
<html>
<head>
<meta http-equiv="Content-Type" conte...
```
Don't forget to remove the space you have before
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执笔经年

2020-12-06 05:17
First, you'll need to add session_start() at the top of any page that you wish to use SESSION variables on.

Also, you should check to make sure the variable is set first before using it:
```
if(isset($_SESSION['SESS_fname'])){
    echo $_SESSION['SESS_fname'];
}
```
Or, simply:
```
echo (isset($_SESSION['SESS_fname']) ? $_SESSION['SESS_fname'] : "Visitor");
```
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