How can PHP efficiently notify clients of database updates in real-time?

One way to efficiently notify clients of database updates in real-time using PHP is by implementing a technique called long polling. This involves the client making a request to the server, and the server holding the request open until there is new data to send back to the client. This way, the client is notified immediately when there are updates in the database. 

<?php

// Check for database updates
function checkForUpdates() {
    // Check database for updates
    // Return true if there are updates, false otherwise
}

// Long polling function
function longPolling() {
    while (true) {
        if (checkForUpdates()) {
            echo json_encode(['status' => 'update']);
            break;
        } else {
            // Wait for a short period before checking again
            sleep(1);
        }
    }
}

// Call the long polling function
longPolling();

?>

Keywords

PHP real-time notifications database updates websockets pusher

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