What are some alternative methods to flush() and ob_start() for controlling output in PHP scripts?

Issue: If you want to control the output in PHP scripts without using flush() and ob_start(), you can use output buffering with ob_get_clean() to capture the output and manipulate it before sending it to the browser.

// Start output buffering
ob_start();

// Output your content
echo "Hello, World!";

// Capture the output and manipulate it
$output = ob_get_clean();

// Manipulate the output
$output = strtoupper($output);

// Send the manipulated output to the browser
echo $output;