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
說明
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 .
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.
參數
- 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值
如果成功則回傳 TRUE，失敗則回傳 FALSE。