If statement help:

[|2eM!x]

    <?php
            [B]If(($_POST['R\W']) == 'r'){[/B]
        $contents = @fopen($_POST['file'], "r") or die("Error opening1");
        $reading = fread($contents, filesize($_POST['file'])) or die("Error Reading");
        @fclose($_POST['file']);
            echo $_POST['file'],"/n",$reading;
            } Else {    
        $contents = @fopen($_POST['file'], "w") or die("Error opening2");
        @fwrite($contents,"New file created") or die("Error writing");
        @fclose($_POST['file']);
            }
    ?>

How do i check posts value? seems im doing it wrong-it always goes to elses, even if $_POST['R\W'] does equal r

thanks