What are the drawbacks of using JavaScript to call a PHP page every second to check for new emails?

The drawbacks of using JavaScript to call a PHP page every second to check for new emails include increased server load, potential performance issues, and unnecessary strain on resources. A more efficient approach would be to use AJAX to periodically check for new emails without continuously refreshing the page. 

<?php
// Check for new emails
// Code to check for new emails goes here

// Return response in JSON format
$response = array(
    'new_emails' => $new_emails // Set to true if new emails found, false otherwise
);

header('Content-Type: application/json');
echo json_encode($response);
?>

Keywords

JavaScript PHP AJAX polling performance

Related Questions