How can sessions be effectively used to store form data in PHP during a multi-step process?

When dealing with a multi-step form process in PHP, sessions can be effectively used to store form data across different steps. This allows the data to persist as the user progresses through the form, ensuring that all input is retained until the final submission. 

// Start the session
session_start();

// Store form data in session variables
$_SESSION['step1_data'] = $_POST['step1_data'];
$_SESSION['step2_data'] = $_POST['step2_data'];
$_SESSION['step3_data'] = $_POST['step3_data'];

// Retrieve form data from session variables
$step1_data = $_SESSION['step1_data'];
$step2_data = $_SESSION['step2_data'];
$step3_data = $_SESSION['step3_data'];

Keywords

sessions form data multi-step process PHP storage

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