What potential issue is causing the "Notice: Undefined index: seite" error in the PHP code?

The "Notice: Undefined index: seite" error in PHP code occurs when trying to access an array key that doesn't exist. To solve this issue, you need to check if the key 'seite' exists in the array before trying to access it to avoid the error. This can be done using the isset() function to verify the existence of the key before accessing it. 

if(isset($_GET['seite'])) {
    $seite = $_GET['seite'];
    // continue with the code using $seite
} else {
    // handle the case when 'seite' key is not present in the array
}

Keywords

Undefined index seite PHP error troubleshooting

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