(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.
|