How can the problem of a cookie not being available on the first page load be addressed in PHP?

Issue: The problem of a cookie not being available on the first page load can be addressed by setting the cookie before any output is sent to the browser. This ensures that the cookie is available for use immediately. PHP Code Snippet: 

<?php
// Set the cookie before any output is sent
setcookie('cookie_name', 'cookie_value', time() + 3600, '/');
?>
<!DOCTYPE html>
<html>
<head>
    <title>Cookie Example</title>
</head>
<body>
    <h1>Cookie Example</h1>
    <?php
    // Retrieve the cookie value
    $cookie_value = $_COOKIE['cookie_name'];
    echo 'Cookie Value: ' . $cookie_value;
    ?>
</body>
</html>

Keywords

cookie PHP session setcookie header

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