openssl_free_key

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

openssl_free_key — 释放密钥资源

警告

本函数已自 PHP 8.0.0 起被废弃。强烈建议不要依赖本函数。

说明

openssl_free_key(OpenSSLAsymmetricKey $key): void

openssl_free_key() 从内存中释放和指定的 key 相关联的密钥。

参数

key

返回值

没有返回值。

更新日志

版本	说明
8.0.0	此函数现已弃用，因为不再有效。
8.0.0	`key` 现在接受 OpenSSLAsymmetricKey；之前接受类型 `OpenSSL key` 的 resource。

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Lawri van Bul ¶

6 years ago

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.

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Richard Lynch ¶

11 years ago

openssl_free_key and openssl_pkey_free are probably aliases.

And the preferred one is probably openssl_pkey_free.