if (isset($_POST['setMenu'])) {
        $setMenu = $_POST['setMenu'];
    }
    $food = '0';
    if (!empty($_POST['food'])) {
        $food = implode('|', $_POST['food']);
    }
    $amount = $_POST['amount'];
    $full = $_POST['foodFull'];
    $fullamount = '';
    $j = 0;
    for ($i = 0; $i < count($full); $i++) {
        for ($j; $j < $i + 1; $j++) {
            $fullamount .= $full[$i] . '|' . $amount[$j] . ';';
        }
    }
    $fullamount = rtrim($fullamount, ';');
    $totalCost = getTotalBookingAmount($service, $guest, $gate, $stage, $food, $full, $amount, $setMenu);
    if (!similarDateShift($date, $shift)) {
        setOrder($user, $date, $shift, $purpose, $service, $guest, $gate, $stage, $food, $totalCost, $fullamount, $setMenu, date("Y-m-d"));
        echo '<script language="javascript">
                alert("Temporarily Booked !!\\nYour Total Cost is ' . $totalCost . '.00");
                window.location="' . SERVER . '/myBookings";
              </script>';
    } else {
        echo '<script language="javascript">
                alert("Date and shift have already chosen !!");
                window.location="' . SERVER . '/booking";
              </script>';
    }
}
<?php

require '../model/db.php';
$value = $_GET['query'];
$dob = $_GET['date'];
$date = str_replace('/', '-', $dob);
$date = date('Y-m-d', strtotime($date));
if (similarDateShift($date, $value)) {
    echo "**{$value} has already booked !! Please select another shift.";
}