What is causing the "Undefined variable" error in the PHP script when variables are assigned values in a form script?

The "Undefined variable" error in PHP occurs when a variable is used without being defined first. To solve this issue in a form script, make sure to check if the variable is set before using it. This can be done using the isset() function to determine if the variable has been set or not. 

<?php
$name = "";
$email = "";

if(isset($_POST['name'])) {
    $name = $_POST['name'];
}

if(isset($_POST['email'])) {
    $email = $_POST['email'];
}
?>

Keywords

PHP Undefined variable Form script Error Variable assignment

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