How can PHP's upload-progress session functionality be utilized for tracking file import progress?

To track file import progress using PHP's upload-progress session functionality, you can store the progress data in the session variable and update it as the file is being uploaded. This can be achieved by utilizing the `$_SESSION` superglobal array to store and retrieve the progress data. 

<?php
session_start();

if(isset($_POST['submit'])) {
    $file = $_FILES['file'];
    
    // Store the progress data in the session variable
    $_SESSION['upload_progress'] = [
        'bytes_processed' => $file['size'],
        'bytes_total' => $file['size']
    ];
    
    move_uploaded_file($file['tmp_name'], 'uploads/' . $file['name']);
    
    // Clear the progress data from the session variable after the upload is completed
    unset($_SESSION['upload_progress']);
}
?>

Keywords

PHP upload-progress session file import progress tracking

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