How does the size of the buffer and server-side settings impact the effectiveness of ob_flush() in PHP scripts?

The size of the buffer and server-side settings can impact the effectiveness of ob_flush() in PHP scripts by determining how much data is buffered before being sent to the client. If the buffer size is too large or the server settings are not optimized, ob_flush() may not work as expected and the output may not be sent to the client in a timely manner. To address this issue, it is important to adjust the buffer size and server settings to ensure that ob_flush() functions correctly.

// Adjust the buffer size and server settings for effective ob_flush()

// Set the buffer size
ini_set('output_buffering', 'off');

// Send the buffered output to the client
ob_end_flush();
ob_flush();
flush();