PHP 8.1.0 Beta 1 available for testing

openssl_free_key

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

openssl_free_keyFree key resource

Warning

This function has been DEPRECATED as of PHP 8.0.0. Relying on this function is highly discouraged.

Description

openssl_free_key(OpenSSLAsymmetricKey $key): void

openssl_free_key() frees the key associated with the specified key from memory.

Parameters

key

Return Values

No value is returned.

Changelog

Version Description
8.0.0 This function is now deprecated as it doesn't have an effect anymore.
8.0.0 key accepts an OpenSSLAsymmetricKey now; previously, a resource of type OpenSSL key was accepted.
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User Contributed Notes 3 notes

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Lawri van Bul
3 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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1
CIIDMike[at]Bweb1dev3
7 months ago
PHP 8.0 Deprecated:  Function openssl_free_key() is deprecated
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0
Richard Lynch
8 years ago
openssl_free_key and openssl_pkey_free are probably aliases.

And the preferred one is probably openssl_pkey_free.
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