What are the alternatives to using AJAX for regularly updating lists in PHP, and how can they be implemented effectively?

Using server-sent events (SSE) is an alternative to AJAX for regularly updating lists in PHP. SSE allows the server to push updates to the client without the need for the client to continuously request for updates. This can be implemented effectively by setting up an SSE endpoint on the server that sends updates to the client whenever new data is available. 

<?php
header('Content-Type: text/event-stream');
header('Cache-Control: no-cache');

// Simulate updating list every second
while (true) {
    $data = generateList(); // Function to generate updated list data
    echo "data: " . json_encode($data) . "\n\n";
    ob_flush();
    flush();
    sleep(1);
}

function generateList() {
    // Generate and return updated list data here
}
?>

Keywords

PHP real-time updates WebSockets Server-Sent Events polling

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