International PHP Conference Berlin 2023

openssl_cipher_key_length

(PHP 8 >= 8.2.0)

openssl_cipher_key_lengthGets the cipher key length

Description

openssl_cipher_key_length(string $cipher_algo): int|false

Gets the cipher key length.

Liste de paramètres

cipher_algo

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

Valeurs de retour

Returns the cipher length on success, ou false si une erreur survient.

Erreurs / Exceptions

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

Exemples

Exemple #1 openssl_cipher_key_length() example

<?php
$method 
'AES-128-CBC';

var_dump(openssl_cipher_key_length($method));
?>

Résultat de l'exemple ci-dessus est similaire à :

int(16)
add a note

User Contributed Notes

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