public function loadPrivateKey($key, $passphrase = null, $isFile = true)
	{
		return $this->loadKey($key, $isFile, true, $passphrase);
	}
public function loadPrivateKey($key, $passphrase = null, $isFile = true)
	{
		return $this->loadKey($key, $isFile, true, $passphrase);
	}
public function loadPrivateKey ( $ key , $ passphrase = null , $ isFile = true ) { return $ this -> loadKey ( $ key , $ isFile , true , $ passphrase ) ; }
Loads a PEM formatted private key.

@param	string	$key				The private key in PEM format or a path to the key (see openssl_pkey_get_private)
@param	string	$passphrase			Password to the key file (if there is one)
@param	bool	$isFile				Whether the key is a path to a file
@return	bool						True if the key was successfully loaded, false otherwise
@throws	\UnexpectedValueException	Thrown if the key cannot be loaded
Loads a PEM formatted private key .