Why is the file checksum different on different OS?

Question

linux

Good afternoon. Using the md5_file function in PHP, I get the checksum of the file, but I noticed that on Windows 7 x86 and OSX, the function gives me different hashes. How can this be and what is it connected with?

Answer 1

Windows and Linux has different line endings, \r\n and \n. So when the file is read, the content of files is different.

via

Answer 2

First you need to understand whether the correct hash is issued at all. md5deep filename and compare with PHP results.