How can output buffering settings impact the functionality of cookies and sessions in PHP scripts?

Output buffering settings can impact the functionality of cookies and sessions in PHP scripts because output buffering can prevent headers from being sent to the browser. This can cause issues with setting or reading cookies and sessions because they rely on headers being sent before any content. To solve this issue, you can turn off output buffering using the `ob_end_flush()` function to flush the output buffer and send any pending data to the browser before setting cookies or starting sessions. 

<?php
ob_end_flush(); // Flush the output buffer
// Now you can set cookies or start sessions without any issues
setcookie('cookie_name', 'cookie_value', time() + 3600, '/');
session_start();
?>

Keywords

output buffering cookies sessions PHP scripts functionality

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