PHP. Руководство по PHP. 2005
mcrypt_cfb
mcrypt_cfb
Description
string mcrypt_cfb (int cipher, string key, string data, int mode, string iv)string mcrypt_cfb (string cipher, string key, string data, int mode [, string iv])
The first prototype is when linked against libmcrypt 2.2.x, the second when linked against libmcrypt 2.4.x or higher. The mode should be either MCRYPT_ENCRYPT or MCRYPT_DECRYPT.
This function should not be used anymore, see mcrypt_generic() and mdecrypt_generic() for replacements.
mcrypt_cbc
mcrypt_create_iv