Description

bool openssl_pkey_export_to_file ( mixed $key, string $outfilename [, string $passphrase [, array $configargs]] )

openssl_pkey_export_to_file() saves an ascii-armoured (PEM encoded) rendition of key into the file named by outfilename. The key can be optionally protected by a passphrase. configargs 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 configargs. Vrací TRUE při úspěchu, FALSE při selhání.

Poznámka: 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.