php man page for openssl_pkey_export

OPENSSL_PKEY_EXPORT(3)							 1						    OPENSSL_PKEY_EXPORT(3)

openssl_pkey_export - Gets an exportable representation of a key into a string

SYNOPSIS
       bool openssl_pkey_export (mixed	$key, string  &$out, [string  $passphrase], [array  $configargs])

DESCRIPTION
       openssl_pkey_export(3) exports $key as a PEM encoded string and stores it into $out (which is passed by reference).

       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
	      o $key
		-

	      o $out
		-

	      o $passphrase
		- The key is optionally protected by $passphrase.

	      o $configargs
		-$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(3) for more information about $configargs.

RETURN VALUES
	Returns TRUE on success or FALSE on failure.

PHP Documentation Group 												    OPENSSL_PKEY_EXPORT(3)