在php中使用count()
查询将导致结果显示在循环中。如何解决这个问题?
phpmyadmin可以很好地显示总和,但不能将其应用于php代码。
$conn = mysqli_connect('localhost','root','','db');
if (!$conn) { die('db error'); };
$result = mysqli_query($conn, '
select count(*) as x from users
');
$row = mysqli_fetch_assoc($result);
echo $row['x'];
预期结果:
2
实际输出:
2222222222222222222222222222222222222222222222222222222222222222222...
答案 0 :(得分:-1)
我建议您使用prepared statements。
$conn = new mysqli("localhost", "root", "", "db");
if($stmt = $conn->prepare("SELECT count(*) as x FROM users")) {
$stmt->execute();
$result = $stmt->get_result();
while($row = $result->fetch_assoc()) {
$number = $row['x'];
}
$stmt->close();
}else{
echo "Error";
}
$conn->close();
if(isset($number)){
echo $number;
}