In what ways can using md5_file() instead of fopen for reading image content improve server performance in PHP?

Using md5_file() instead of fopen for reading image content can improve server performance in PHP by avoiding the need to open and read the entire file to generate the checksum. md5_file() calculates the MD5 hash of a file without having to read the entire file into memory, which can be more efficient for large files. This can help reduce the server's workload and improve overall performance when working with image files.

// Using md5_file() to calculate the MD5 hash of an image file
$imagePath = 'path/to/image.jpg';
$imageChecksum = md5_file($imagePath);

echo $imageChecksum;