mcrypt_cfb(PHP 4, PHP 5) mcrypt_cfb — Encrypts/decrypts data in CFB mode Описание
   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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