(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
openssl_pkey_export — Gets an exportable representation of a key into a string
$key
,&$output
,$passphrase
= null
,$options
= null
openssl_pkey_export() exports key
as a PEM encoded string and stores it into output
(which is passed by reference).
Note: You need to have a valid openssl.cnf installed for this function to operate correctly. See the notes under the installation section for more information.
key
output
passphrase
The key is optionally protected by passphrase
.
options
options
can be used to fine-tune the export process by specifying and/or overriding options for the openssl configuration file. See openssl_csr_new() for more information about options
.
Version | Description |
---|---|
8.0.0 | key accepts an OpenSSLAsymmetricKey or OpenSSLCertificate instance now; previously, a resource of type OpenSSL key or OpenSSL X.509 was accepted. |