(PHP 4 >= 4.2.0, PHP 5, PHP 7)
openssl_pkey_get_private — Get a private key
openssl_pkey_get_private ( mixed $key [, string $passphrase = "" ] ) : resource
openssl_pkey_get_private() parses key
and prepares it for use by other functions.
key
key
can be one of the following:
passphrase
The optional parameter passphrase
must be used if the specified key is encrypted (protected by a passphrase).
Returns a positive key resource identifier on success, or false
on error.
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https://www.php.net/manual/en/function.openssl-pkey-get-private.php