How does using ob_start and ob_end_flush differ from creating a cache file in PHP?

Using ob_start and ob_end_flush in PHP allows you to buffer output before sending it to the browser, which can improve performance by reducing the number of HTTP requests. Creating a cache file involves storing the output of a script in a file and then serving that file instead of re-executing the script each time. While ob_start and ob_end_flush are more suitable for dynamic content that changes frequently, creating a cache file is better for static content that doesn't change often. 

<?php
// Using ob_start and ob_end_flush
ob_start();

// Your dynamic content here

ob_end_flush();
?>

Keywords

ob_start ob_end_flush cache file PHP difference

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