php man page for openssl_pkey_export_to_file

OPENSSL_PKEY_EXPORT_TO_FILE(3)						 1					    OPENSSL_PKEY_EXPORT_TO_FILE(3)

openssl_pkey_export_to_file - Gets an exportable representation of a key into a file

SYNOPSIS
       bool openssl_pkey_export_to_file (mixed	$key, string  $outfilename, [string  $passphrase], [array  $configargs])

DESCRIPTION
       openssl_pkey_export_to_file(3) 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
	      o $key
		-

	      o $outfilename
		- Path to the output file.

	      o $passphrase
		- The key can be optionally protected by a $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.

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