How can form data be retained and displayed after submission in PHP?

To retain and display form data after submission in PHP, you can store the form data in variables and then use those variables to pre-fill the form fields upon submission. This can be done by checking if the form has been submitted and if so, retrieving the form data from the POST array and assigning it to the variables. Then, in the form fields, you can use PHP echo statements to display the stored form data. 

<?php
// Initialize variables to store form data
$name = '';
$email = '';

// Check if form has been submitted
if($_SERVER['REQUEST_METHOD'] == 'POST'){
    // Retrieve form data from POST array
    $name = $_POST['name'];
    $email = $_POST['email'];
}

// Display the form with stored data
echo '<form method="post">';
echo 'Name: <input type="text" name="name" value="' . $name . '"><br>';
echo 'Email: <input type="email" name="email" value="' . $email . '"><br>';
echo '<input type="submit" value="Submit">';
echo '</form>';
?>

Keywords

PHP form data submission retain display

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