What are the best practices for error handling in PHP when using setcookie() function?

When using the setcookie() function in PHP, it is important to handle any potential errors that may occur during the cookie setting process. One common issue is attempting to set a cookie after any output has been sent to the browser, which will result in a "headers already sent" error. To prevent this, it is recommended to check if headers have already been sent before attempting to set a cookie. 

// Check if headers have already been sent
if (!headers_sent()) {
    // Set the cookie
    setcookie("cookie_name", "cookie_value", time() + 3600, "/");
} else {
    // Handle error appropriately (e.g. log error, display error message)
    echo "Error: Headers already sent";
}

Keywords

setcookie error handling PHP exceptions try-catch

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