GOOCODE - Find your code/scripts

2 Sometimes we need to project a specific PHP information is encrypted, encrypted string that is generated by an encryption algorithm, the encrypted string can be decrypted by the decryption algorithm, to facilitate the decrypted program information is processed.

The most common applications in the user login, and some API data exchange scenarios.
I included some of the more classic PHP code encryption and decryption functions for everyone to share. Cryptographic principles generally through some encryption and decryption algorithms, the key is added to the algorithm, encryption and decryption finally get results.