Question

在我的PHP应用程序中，我希望用户能够使用数据库中记录的电子邮件，用户名和号码登录。然而，我

的init.php

<?php
$server = 'localhost';
$username = 'default';
$password = 'xxxx';
$database = 'default';

try{
   $conn = new PDO("mysql:host=$server;dbname=$database;", $username, $password);
} catch(PDOException $e){
   die( "Connection failed: " . $e->getMessage());
}

的login.php

<?php
session_start();
if(isset($_SESSION['user_name'])!='') {
header('Location: index.php');
}
include_once 'init.php';
//check if form is submitted
if (isset($_POST['login'])) {
$email = $_POST['email'];
$password = $_POST['password'];
$records = $conn->prepare('SELECT username,email,number,password FROM users WHERE username = :login OR email = :login OR number = :login');
$records->bindParam(':login', $email);
$records->execute();
$results = $records->fetch(PDO::FETCH_ASSOC);

$message = '';

if(count($results) > 0 && password_verify($password, $results['password']) ){

$gome = $results['username'];$_SESSION['user_name'] = $gome;
$CookieExpire = 1000;
$time = 100 * 70 * 48 * 86400;
$time = time() + $time;
setcookie('username', '$gome', '$time');
setcookie('password', '$password', '$time');header("Location: /");

} else {
$message = 'Sorry, those credentials do not match';
}

}

?>

在返回时我收到此错误：致命错误：调用成员函数prepare() 第11行/var/www/u0377863/public_html/xx.com/dom/login.php中的非对象：

    $records = $conn->prepare('SELECT username,email,number,password FROM users WHERE username = :login OR email = :login OR number = :login');

Answer 1

试试此代码

＆＃13;

mylogit<- multinom(to ~ RealAge, mydata)

＆＃13;

Answer 2

1）尝试将 init.php 代码移至login.php，以确保其按预期加载。

2）尝试在＆＃34;新PDO之前声明全局变量$ conn（global $ conn;）。＆＃34;检查这是否是范围问题。

3）如果前两个步骤没有解决问题，请检查是否加载了 pdo （您可以使用https://stackoverflow.com/a/6113469/1277044中列出的功能进行检查）

Answer 3

这是变量的范围。

try{
   $conn = new PDO("mysql:host=$server;dbname=$database;", $username, $password);
} catch(PDOException $e){
   die( "Connection failed: " . $e->getMessage());
}

应该是

$conn = null;    
try{
   $conn = new PDO("mysql:host=$server;dbname=$database;", $username, $password);
} catch(PDOException $e){
   die( "Connection failed: " . $e->getMessage());
}

您的$ conn在try块中声明，因此在外部不可见。通过在外面初始化它，它随处可见。

PHP在准备SQL语句时抛出致命错误

3 个答案: