Are there any common pitfalls or mistakes to avoid when handling binary files in PHP, especially on different server environments?

When handling binary files in PHP, one common pitfall is not properly setting the correct file mode when opening the file. This can lead to unexpected behavior or corrupted data when reading or writing binary files. To avoid this issue, always use the 'b' flag when opening binary files to ensure proper handling.

// Open a binary file with the correct file mode
$file = fopen('binaryfile.bin', 'rb');
if ($file) {
    // Read or write binary data here
    fclose($file);
} else {
    echo "Error opening binary file";
}