PHP 5.5.16 is released

openssl_cipher_iv_length

(PHP 5 >= PHP 5.3.3)

openssl_cipher_iv_lengthGets the cipher iv length

Descrição

int openssl_cipher_iv_length ( string $method )

Gets the cipher iv length.

Parâmetros

method

The method.

Valor Retornado

Returns the cipher length on success, or FALSE on failure.

Erros

Emits an E_WARNING level error when the cipher algorithm is unknown.

Exemplos

Exemplo #1 openssl_cipher_iv_length() example

<?php
$method 
'AES-128-CBC';
$ivlen openssl_cipher_iv_length($method);

echo 
$ivlen;
?>

O exemplo acima irá imprimir algo similar à:

16
add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top