What is the best practice for setting cookies in PHP to avoid errors related to outputting content before setting cookies?

When setting cookies in PHP, it is important to ensure that no content has been sent to the browser before setting the cookies. To avoid errors related to outputting content before setting cookies, you should make sure that no whitespace or HTML tags are present before the `setcookie()` function is called. 

<?php
ob_start(); // Start output buffering
// Place all PHP code, including setting cookies, before any output
setcookie("user", "John Doe", time() + 3600, "/");
ob_end_flush(); // Flush the output buffer and send content to the browser
?>

Keywords

headers_sent setcookie ob_start output buffering error_reporting

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