How can the PHP code be optimized to ensure proper cookie recognition and functionality?

To optimize PHP code for proper cookie recognition and functionality, it's important to set the cookies before any output is sent to the browser. This ensures that the cookies are properly recognized and can be used throughout the script. Additionally, make sure to set the cookie path and domain correctly to ensure they are accessible across different pages on the website. 

<?php
// Set cookies before any output
setcookie("user", "John Doe", time() + 3600, '/');
setcookie("email", "john@example.com", time() + 3600, '/');

// Retrieve and use cookies
if(isset($_COOKIE['user'])) {
    echo "Welcome back, " . $_COOKIE['user'];
} else {
    echo "Welcome, guest";
}
?>

Keywords

PHP cookie optimization recognition functionality

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