openssl_free_key()
(PHP 4 >= 4.0.4, PHP 5, PHP 7)
释放密钥资源
说明
openssl_free_key(resource $key_identifier): void
openssl_free_key()从内存中释放和指定的$key_identifier相关联的密钥。
参数
- $key_identifier
返回值
没有返回值。
I just checked the code for PHP 7.1 and in there openssl_free_key is an alias for opnessl_pkey_free (PHP_FALIAS). This supports Richards assumption. I would also suggest to not use the alias, but use the openssl_pkey_free function in new code. This is because it is more descriptive about what its intend is and is the same structure as similar function in the openssl section.
openssl_free_key and openssl_pkey_free are probably aliases. And the preferred one is probably openssl_pkey_free.