형들 php코딩 오류좀 잡아주세요ㅠㅠㅠ

[익명(222.235)]

<?php
function cal_fee($day, $age) //입장권
{
    if($day=="주간")
    {
        if($age>=18)
            $money=18000;
    }
    elseif($age>=11 && $age<=17)
    {
            $money=15000;
    }
    elseif($age>=4 && $age<=10)
    {
            $money=13000;
    }

    return $money;
}

function cal_fee2($day, $age) //자유이용권
{  
    if($day=="주간")
    {
        if($age>=18)
            $money=32000;
        else
            $money=29000;
    }
    elseif
    {
        if($age>=11 && $age<=17)
            $money=2800;
        else
            $money=25000;
    }
    else
    {
        if($age>=4 && $age<=10)
            $money=25000;
        else
            $money=22000;
    }

    return $money;
}

function cal_fee3($day, $age) //빅5 입장권
{
    if($day=="주간")
    {
        if($age>=18)
            $money=29000;
    }
    elseif($age>=11 && $age<=17)
    {
            $money=25000;
    }
    elseif($age>=4 && $age<=10)
    {
            $money=22000;
    }

    return $money;
}

 

$category =  $_POST[category];
$age = $_POST[age];
$day = "주간";

if($category ==1)
    $fee=cal_fee($day, $age);
elseif($category ==2)
    $fee=cal_fee2($day, $age);
else($category ==3)
    $fee=cal_fee3($day, $age);

if($category ==1)
    $cat="일반 입장권";
elseif($category ==2)
    $cat="자유 입장권";
else($category ==3)
    $cat="빅5 입장권";

echo "구분 : $cat<br>";

if($category==1 || $category==2)
    echo " 때 $day <br>";

echo " 나이 : $age 세<br>";
echo " 입장료 : $fee 원<br>";

 

빨간색으로 칠한부분이 자꾸 오류가 뜨는데 왜 뜨는지를 모르겠어요 제발좀 알려주세요ㅠㅠ