How can one check the HTTP response header to troubleshoot cookie-setting issues in PHP?

To troubleshoot cookie-setting issues in PHP, you can check the HTTP response headers to see if the cookie is being set correctly. This can help identify any errors in the cookie settings, such as incorrect domain or path values. By examining the response headers, you can ensure that the cookie is being set with the correct parameters. 

// Set a cookie
setcookie("test_cookie", "test_value", time() + 3600, "/", "example.com");

// Check the HTTP response headers
foreach (headers_list() as $header) {
    echo $header . "<br>";
}

Keywords

HTTP response header cookie-setting troubleshooting PHP error detection

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