请一些人帮我这个iv被困2天!!警告：mysqli_num_rows（）期望参数1为mysqli_result，给定布尔值 [英] Please can some one help me with this iv been stuck for 2 days !! Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given

问题描述

我一直得到同样的错误，我已经浏览了这个网站和许多其他人试图找到解决方案，请你们其中一个人帮我这里是代码



请注意$ link我已删除并替换了主机名，用户名和密码以保证安全原因

i keep getting the same error i have looked through this website and many others trying to find a solution please can one of yous help me here is the code

please note on $link i have removed and replaced the hostnamem, username and password for security reasons

$link = mysqli_connect('****HOSTNAME*****', '***USERNAME****', '**PASSWORD**', 'a8834432_website')or die("cannot connect" . mysqli_connect_error());
$usr = $_POST['user'];
$pas = $_POST['pass'];
if ($usr == "")
{
header("Location: ../secure.php?error=E3");
die();
}
else if ($usr != "")
{
$result = mysqli_query($link, "SELECT * FROM 'website' WHERE 'user' = $usr");
//echo($result);

///////PROBLEM STARTS HERE ////////////

if (mysqli_num_rows($result) > 0) {
    // output data of each row
    while($row = mysqli_fetch_assoc($result)) {
        echo "id: " . $row["user"];
    }
}
}
?>

推荐答案

我出于安全原因删除并替换了主机名，用户名和密码

link i have removed and replaced the hostnamem, username and password for security reasons

link = mysqli_connect（' **** HOSTNAME *****'，' *** USERNAME ** **'，' ** PASSWORD **'，' a8834432_website'）或死亡（ 无法连接 .mysqli_connect_error（））;

link = mysqli_connect('****HOSTNAME*****', '***USERNAME****', '**PASSWORD**', 'a8834432_website')or die("cannot connect" . mysqli_connect_error());

usr =

usr =

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