openssl_pkey_free

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

openssl_pkey_free — Frees a private key

Warning

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

Description

#[\Deprecated]
openssl_pkey_free(OpenSSLAsymmetricKey $key): void

Note:
This function has no effect. Prior to PHP 8.0.0, this function was used to close the resource.

This function frees a private key created by openssl_pkey_new().

Parameters

key: Resource holding the 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 2 notes

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-1

suconghou at gmail dot com ¶

4 years ago

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.

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-2

djmaze ¶

5 years ago

This function also frees public key resources as received with openssl_pkey_get_public().

Manual above should say: "Frees a pkey resource"

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