PHP 8 deprecates openssl_free_key (actually openssl_pkey_free which it aliases) and automatically destroys the key instance when it goes out of scope.
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
openssl_pkey_free — Frees a private key
$key
) : voidThis function frees a private key created by openssl_pkey_new().
key
Resource holding the key.
Não há valor retornado.
PHP 8 deprecates openssl_free_key (actually openssl_pkey_free which it aliases) and automatically destroys the key instance when it goes out of scope.