(PHP 3 >= 3.0.8, PHP 4, PHP 5)
mcrypt_cbc -- Encrypt/decrypt data in CBC mode
Description
string 
mcrypt_cbc ( int cipher, string key, string data, int mode [, string iv] )
string 
mcrypt_cbc ( 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.