What are the potential drawbacks of saving temporary files on the user's hard drive during image processing in PHP?

Potential drawbacks of saving temporary files on the user's hard drive during image processing in PHP include security risks, increased disk usage, and potential performance issues. To mitigate these drawbacks, consider using PHP's built-in functions for processing images in memory rather than saving temporary files to the hard drive.

// Example of processing an image in memory without saving temporary files
$image = imagecreatefromjpeg('example.jpg');

// Perform image processing operations here

// Output the processed image directly to the browser
header('Content-Type: image/jpeg');
imagejpeg($image);

// Free up memory
imagedestroy($image);