Zend Encrypted PHP, decrypted with Dezender with special code, $FN _-2147483647 ()

Zend Encrypted PHP, decrypted with Dezender after a special code, $FN _-2147483647 () website run times wrong: Parse error:syntax error, unexpected ' (' in E:\PHPnow-1.5.6\ htdocs\source\control\admin\frame.php on line 28
The 28th line of code is the special code, $FN _-2147483647 (), as follows:
Private Function control ()
{
$FN _-2147483647 ();
}

Public Function Control_run ()

How can I change it?

Reply to discussion (solution)

-cannot appear in the variable name
Just change it for a minute.

$FN _-2147483647 ();
Change to $fn-2147483647 (); so?

Change to such $FN __2147483647 ();
Soon-Change to _

Change to such $FN __2147483647 ();
It's still not working. Web site Run prompt: Fatal error:function name must be a string of E:\PHPnow-1.5.6\htdocs\source\control\admin\frame.php on line 28
This is not the right line.

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