mcrypt_enc_get_iv_size
(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_enc_get_iv_size — Returns the size of the IV of the opened algorithm
Aviso
Esta função tornou-se DEFASADA a partir do PHP 7.1.0 e foi REMOVIDA a partir do PHP 7.2.0. O uso desta função é fortemente desencorajado.
Descrição
This function returns the size of the IV of the algorithm specified by the encryption descriptor in bytes. An IV is used in cbc, cfb and ofb modes, and in some algorithms in stream mode.
Parâmetros
-
td -
The encryption descriptor.
Valor Retornado
Returns the size of the IV, or 0 if the IV is ignored by the algorithm.
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