Are there any potential pitfalls to be aware of when using output buffer functions in PHP for caching purposes?

One potential pitfall when using output buffer functions in PHP for caching purposes is that if not used correctly, it can lead to unexpected behavior or errors in your application. To avoid this, make sure to properly clear and flush the output buffer after using it for caching.

// Start output buffering
ob_start();

// Your code for generating content goes here

// Save the contents of the output buffer to a variable
$cached_content = ob_get_clean();

// Output the cached content
echo $cached_content;

// Clear and flush the output buffer
ob_end_clean();