openssl_pkey_export_to_file
PHP function
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(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
Gets an exportable representation of a key into a file
Description
openssl_pkey_export_to_file(OpenSSLAsymmetricKey|OpenSSLCertificate|array|string $key, string $output_filename, string|null $passphrase = null, array|null $options = null): bool
openssl_pkey_export_to_file() saves an ascii-armoured (PEM encoded) rendition of key into the file named by output_filename.
Cnf
Parameters
keyoutput_filenamePath to the output file.
passphraseThe key can be optionally protected by a
passphrase.optionsoptionscan be used to fine-tune the export process by specifying and/or overriding options for the openssl configuration file. Seeopenssl_csr_new()for more information aboutoptions.
Return Values
Success
Changelog
| 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. |