任何人都可以看到任何明显的错误,为什么我无法从数据库中检索任何内容?
<!DOCTYPE html>
<html>
<body>
<?php
//Grabbing from ? in url
$query_string=$_SERVER['QUERY_STRING'];
// Converting query_string to int for restaurant_id
$rest_id=(int)$query_string;
var_dump($rest_id);
$con=mysqli_connect("","","", "");
$sql="SELECT * from menu_item WHERE restaurant_id='".$rest_id."'";
if($result = $con->query($sql)){
if($count=$result->num_rows){
echo '<p>', $count, '</p>';
}
} else {
die($con->error);
}
$rows=$result->fetch_all(MYSQLI_ASSOC);
foreach($rows as $row) {
echo $row['category'], '<br>';
}
$mysqli->close();
?>
<h1>You clicked a button</h1>
<p>Yay!!!</p>
</body>
</html>