function

<?php

$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$dbname = 'uclass';

// Create database connection
$con =  mysqli_connect($dbhost, $dbuser, $dbpass, $dbname);



function query($query) {

global $con;

$result = mysqli_query($con, $query);

$rows = [];

while($row = mysqli_fetch_assoc($result)) {


$rows [] = $row;

}

return $rows;

}


function update($update) {

    global $con;

    $kelasId = $update['kelasId'];
    $npm_siswa = $update['npm_siswa'];
    $nama_siswa = $update['nama_siswa'];
    $bidangst_siswa = $update['bidangst_siswa'];
    $ipk_siswa = $update['ipk_siswa'];


    $query = "UPDATE class SET

                npm_siswa = '$npm_siswa',
                nama_siswa = '$nama_siswa',
                bidangst_siswa = '$bidangst_siswa',
                ipk_siswa = '$ipk_siswa'
                WHERE kelasId = $kelasId ";

                 $result = mysqli_query($con, $query);



}


?>