(PHP 3>= 3.0.8, PHP 4 , PHP 5)

mcrypt_cfb -- Encrypt/decrypt data in CFB mode


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.

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