openssl_cipher_key_length

Gets the cipher key length

 **openssl_cipher_key_length** string $cipher_algo

Gets the cipher key length.

cipher_algo The cipher method, see for a list of potential values. openssl_get_cipher_methods

Returns the cipher length on success, return.falseforfailure.

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

Voorbeeld: example

<?php
$method = 'AES-128-CBC';

var_dump(openssl_cipher_key_length($method));
?>

int(16)

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