How to make a file encrypt and decrypt with TripleDes in PHP

[FreshMLS]

I couldn't find enough resource about this subject and i need to learn how can i encrypt and decrypt file using TripleDes in PHP (while uploading it should encrypt the file and while downloading the file it should decrypt).Also i found some examples but i couldn't implement ithttp://php.net/manual/en/mcrypt.examples.phphttp://stackoverflow.com/questions/10548386/issue-with-encrypt-and-decrypt-a-word-docx-file-in-phpThanks for your interests.