Encrypting (large) files in PHP with openSSL

Question

I\'m trying to encrypt (big) files in PHP using AES and have looked into using Mcrypt and OpenSSL, the problem is all solutions I have found so far only encrypt strings, and

Answer 1

I have published two functions which encrypt and decrypt even large files with the help of openssl_encrypt() using the AES-128-CBC algorithm.

Please refer to this openssl_encrypt().