Mysql_query() expects parameter

[irsyad060499]

can some one help me

this my code

<?php
	include "../koneksi.php";
	
	$sql = mysqli_query ("SELECT * FROM admin WHERE username = '$_POST[username]' and password = '$_POST[password]'");
	$data = mysqli_fetch_array($sql);
	$row = mysqli_num_rows($sql);
	
	if($row > 0){
		session_start();
		$_SESSION['useradmin'] = $data['username'];
		$_SESSION['passadmin'] = $data['password'];
		if(!isset($_SESSION)) {
		session_register();}
		?>
		<script type="text/javascript">
<!--
var answer = confirm ("Anda berhasil Login, selamat datang <?php echo "$_SESSION[useradmin]"; ?>  pilih OK untuk lanjut")
if (answer)
window.location="<?php echo"index.php";?>"
// -->
</script>
		<?php
	}else{
		?>
		<script type="text/javascript">
<!--
var answer = confirm ("username dan password tidak valid, anda tidak berhak mengakses konten ini!")
if (answer)
window.location="<?php echo"index.php";?>"
// -->
</script>
		<?php
	}
?>

[Infinity]

Think your connection file will be likely incorrect.

See

https://www.php.net/manual/en/mysqli-result.fetch-assoc.php

How to Connect to Database Using PHP

Introduction You can create databases on 000webhost.com and PHP can be used to connect to those databases. This tutorial explains three different methods how that could be achieved. Most of the websites need to have at least one database and if you are developing a website from the beginning you will have to connect it to a database manually, here you can find how that could be done step by step. What you’ll need Before you begin this guide you’ll need the following: Understanding of PHP synt…

PDO would be recommended.