Mcrypt 函数
PHP Manual

mcrypt_ofb

(PHP 4, PHP 5)

mcrypt_ofbEncrypts/decrypts data in OFB mode

说明

string mcrypt_ofb ( int $cipher , string $key , string $data , int $mode , string $iv )
string mcrypt_ofb ( 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.

Warning

自PHP 5.5.0起,此函数已经被废弃。强烈建议不要使用此函数 。


Mcrypt 函数
PHP Manual