How can PHP error reporting help identify issues with setting and checking cookies in PHP scripts?

PHP error reporting can help identify issues with setting and checking cookies in PHP scripts by displaying any errors or warnings related to cookie functions. By enabling error reporting, developers can quickly identify where the issue lies, whether it's in setting the cookie parameters correctly or checking for the cookie's existence. This can streamline the debugging process and ensure that cookies are being handled properly in the script. 

<?php
// Enable error reporting
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Set a cookie
setcookie("user", "John Doe", time() + 3600, "/");

// Check if the cookie is set
if(isset($_COOKIE['user'])){
    echo "Cookie is set!";
} else {
    echo "Cookie is not set!";
}
?>

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