What are the potential risks of using ob_start() and ob_get_contents() in PHP for output buffering?

When using ob_start() and ob_get_contents() in PHP for output buffering, one potential risk is that the output buffer may not be properly flushed, leading to unexpected behavior or errors in your application. To mitigate this risk, it is important to always call ob_end_clean() or ob_end_flush() after retrieving the contents using ob_get_contents() to ensure that the buffer is properly cleared.

ob_start();

// Your PHP code here

$output = ob_get_contents();
ob_end_clean();

// Use $output as needed