You can't use this function to export a public key
Warning: openssl_pkey_export_to_file(): supplied key param is a public key
openssl_pkey_export_to_file
(PHP 4 >= 4.2.0, PHP 5)
openssl_pkey_export_to_file — Gets an exportable representation of a key into a file
Description
$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.
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.
Parameters
-
key -
-
outfilename -
Path to the output file.
-
passphrase -
The key can be optionally protected by a
passphrase. -
configargs -
configargscan 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 aboutconfigargs.
Return Values
Returns TRUE on success or FALSE on failure.
