IF and ELSE within an IF

I am trying the following, but my page will not load. It is fine if i take the IF. ELSEIF and ELSE out of the containing IF:

$feet = $inches = "";

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $feet = $_POST["feet"];
    $inches = $_POST["inches"]; 

        if(empty($inches)) {
            $inchesErr = "Enter Inches"
        }

        elseif(empty($feet)) {
            $feetErr = "Enter Feet"
        }

        else {

                echo $feet;
                echo $inches;
            }
}

I am sure i am missing something obvious, but I cant see what...And, annoyingly my host has php errors and warning turned off...

Any help would be much appreciated.