Question

<?php

session_start();

if(isset($_POST['submit'])) {

include('CONFIG/config.php');
include('CONFIG/db.php');

$Email = $_POST['email'];
$Password = $_POST['password'];
$_SESSION['email'] = $Email;

//erroe handler
//check if the input is empty
if(empty($Email) || empty($Password)) {
    header("Location: ../index.php?login=error");
     exit();
}else{
    $sql = "SELECT * from users where email='$Email' AND password='$Password'";
    $sql2 = "SELECT roles.id from users, roles where users.email='$Email' and roles.id = users.role_id";
    $result2 = mysqli_query($conn, $sql2);
    $result = mysqli_query($conn, $sql);
    $_SESSION['roleid'] = $result2;
    $resultCheck = mysqli_num_rows($result);
    if($resultCheck < 1){
        header("Location: ../index.php?login=error");
        exit();
    }else{

        header("Location: ../dashboard.php?login=success");
        exit();
    }
}
}else{
 header("Location: ../index.php?login=error");
 exit();

}

表结构：角色

    1   idPrimary   int(11)         No  None        AUTO_INCREMENT  
    2   title   varchar(150)    utf8_unicode_ci     No  None

表结构：用户

    1   idPrimary   int(11)         No  None        AUTO_INCREMENT   
    2   name    varchar(150)    utf8_unicode_ci     No  None             
    3   email   varchar(150)    utf8_unicode_ci     No  None             
    4   password    varchar(256)    utf8_unicode_ci     No  None             
    5   role_id int(11)         No  None

当我运行这段代码并打印会话时，像这样打印$ _SESSION ['roleid'] [roleid] => mysqli_result对象（[current_field] => [field_count] => [lengths] => [num_rows] => [type] =>），但我想要的结果是1

Answer 1

您需要从$result2获取结果。另外，将$_SESSION['roleid']移至成功部分。因为您只需要为成功登录设置会话。查看更新的代码。

<?php 

session_start();

if (isset($_POST['submit'])) {

    include('CONFIG/config.php');
    include('CONFIG/db.php');

    $Email = $_POST['email'];
    $Password = $_POST['password'];
    $_SESSION['email'] = $Email;

//erroe handler
//check if the input is empty
    if (empty($Email) || empty($Password)) {
        header("Location: ../index.php?login=error");
        exit();
    } else {
        $sql = "SELECT * from users where email='$Email' AND password='$Password'";
        $sql2 = "SELECT roles.id from users, roles where users.email='$Email' and roles.id = users.role_id";
        $result2 = mysqli_query($conn, $sql2);
        $result = mysqli_query($conn, $sql);

        $resultCheck = mysqli_num_rows($result);
        if ($resultCheck < 1) {
            header("Location: ../index.php?login=error");
            exit();
        } else {
            $row = mysqli_fetch_array($result2,MYSQLI_ASSOC); // Fetch the result
            $_SESSION['roleid'] = $row['id']; //Set the id to the session variable
            header("Location: ../dashboard.php?login=success");
            exit();
        }
    }
} else {
    header("Location: ../index.php?login=error");
    exit();

}

请参见mysqli_fetch_array()函数

为什么我不能将mysql结果放在$ _SESSION中

1 个答案: