openssl_pkey_get_private

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

openssl_pkey_get_private — Get a private key

openssl_pkey_get_private() parses private_key and prepares it for use by other functions.

private_key

private_key can be one of the following:

a string having the format file://path/to/file.pem. The named file must contain a PEM encoded certificate/private key (it may contain both).
A PEM formatted private key.

passphrase

The optional parameter passphrase must be used if the specified key is encrypted (protected by a passphrase).

Returns an OpenSSLAsymmetricKey instance on success, or false on error.

Version	Description
8.0.0	On success, this function returns an OpenSSLAsymmetricKey instance now; previously, a resource of type `OpenSSL key` was returned.
8.0.0	`private_key` accepts an OpenSSLAsymmetricKey or OpenSSLCertificate instance now; previously, a resource of type `OpenSSL key` or `OpenSSL X.509` was accepted.
8.0.0	`passphrase` is nullable now.