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
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.
Return Values
Returns TRUE
on success or FALSE
on failure.