Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in /home/u580164371/public_html/login.php on line 17
nie rozumiem w czym jest problem i proszę o szybką pomoc.
tutaj macie jeszcze kod
Z góry dziękuję
<!DOCTYPE html>
<?php
$filename = 'install.php';
if (file_exists($filename)) {
echo ("<center><font color='red'><b>/install.php still exists<br>
After installing please delete install.php</center></font></b>");
} else {
if (isset($_POST['Login'])){
include('config.php');
$connection = mysqli_connect($host, $username, $password, $db_name);
if (mysqli_connect_errno($connection)) die("Can't connect to database");
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysqli_query($connection, $sql);
mysqli_num_rows($result);
if($count >= 1){
session_register("myusername");
session_register("mypassword");
header("location: index.php");
} else {
}
}
?>