so my problem is with this code gives me the Warning: mysqli_query() expects at least 2 parameters, 1 given in C:\wamp\www\forum\create_cat.php on line 13 if any1 knows what is there to be fixed here pls help
$sql = "SELECT
cat_id,
cat_name,
cat_description,
FROM
categories";
$result = mysqli_query($sql);
if(!$result)
{
echo 'The categories could not be displayed, please try again later.';
}
else
}
if(mysqli_num_rows($result) == 0)
{
echo 'No categories defined yet.';
}
else
{
echo '<table border="1">
<tr>
<th>Category</th>
<th>Last topic</th>
</tr>';
while($row = mysqli_fetch_assoc($result))
{
echo '<tr>';
echo '<td class="leftpart">';
echo '<h3><a href="category.php?id">' . $row['cat_name'] . '</a></h3>' . $row['cat_description'];
echo '</td>';
echo '<td class="rightpart">';
echo '<a href="topic.php?id=">Topic subject</a> at 10-10';
echo '</td>';
echo '</tr>';
}
}
and i`m using this other file to connect to mydb
$server = 'localhost';
$username = 'root';
$password = '';
$database = 'project yi';
$link=mysqli_connect($server, $username, $password, $database);