php - 当我单击提交时，没有任何回声。为什么？

问题描述

我有一些代码。

这是我的 config.php

<?php

$db_user = "root";
$db_pass = "";
$db_name = "hello_world_accounts";

$db = new PDO('mysql:host=localhost;dbname='. $db_name . ';charset=utf8', $db_user, $db_pass);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

这是我的 index.php

<?php 

session_start();

if(!isset($_SESSION['hello_world_accounts'])){
    header("Location: login.php");
}

if(isset($_GET['logout'])){
    session_destroy();
    unset($_SESSION);
    header("Location: login.php");
}

?>
<!DOCTYPE>
<html lang="en">
<head>
<title>Welcome</title>
</head>
<body>
<p>Welcome to index</p>


<a href="index.php?logout=true">Logout</a>
</body>
</html>

这是我的 jslogin.php

<?php
error_reporting(-1);
session_start();
require_once('config.php');


$email = $_POST['email'];
$username = $_POST['username'];
$password = $_POST['password'];
$emailval = ['email'];

$check = (strpos($emailval,'@'));

if ($check === false){
    echo 'We require valid email';
}else{

$sql = "SELECT * FROM accounts WHERE username=? and password=? and email=? LIMIT 1";
$stmtselect = $db->prepare($sql);
$result = $stmtselect->execute([$username, $password, $email]);
$user = $stmtselect->fetch(PDO::FETCH_ASSOC);
if ($stmtselect->rowCount() > 0) {
    $_SESSION['accounts'] = $user;
    echo 'You have signed in successfully!';
}else {
    echo 'Incorrect Username or Password or Email';
}
}

这是我的 login.php

<?php 
error_reporting(-1);
    session_start();
    
if(isset($_SESSION['hello_world_accounts'])){
    header("Location: index.php");
}

?>
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Programming Knowledge Login</title>
    <link rel="stylesheet" type="text/css" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">
    <link rel="stylesheet" type="text/css" href="css/styles.css">
</head>
<body>
<div class="container h-100">
    <div class="d-flex justify-content-center h-100">
        <div class="user_card">
            <div class="d-flex justify-content-center">
                <div class="brand_logo_container">
                    <img src="img/logo.png" class="brand_logo" alt="Programming Knowledge logo">
                </div>
            </div>  
            <div class="d-flex justify-content-center form_container">
                <form>
                    <div class="input-group mb-2">
                        <div class="input-group-append">
                            <span class="input-group-text"><em class="fas fa-user"></em></span>                 
                        </div>
                        <input type="text" name="username" id="username" class="form-control input_user" placeholder="Username" required>
                    </div>
                    <div class="input-group mb-2">
                        <div class="input-group-append">
                            <span class="input-group-text"><em class="fas fa-key"></em></span>                  
                        </div>
                        <input type="password" name="password" id="password" class="form-control input_pass" placeholder="Password" required>
                    </div>
                    <div class="input-group mb-1">
                        <div class="input-group-append">
                            <span class="input-group-text"><em class="fas fa-inbox"></em></span>                    
                        </div>
                        <input type="email" name="email" id="email" class="form-control input_pass" placeholder="Email" required>
                    </div>
                    <div class="form-group">
                        <div class="custom-control custom-checkbox">
                            <input type="checkbox" name="rememberme" class="custom-control-input" id="customControlInline">
                            <label class="custom-control-label" for="customControlInline">Remember me</label>
                        </div>
                    </div>
                
            </div>
            <div class="d-flex justify-content-center mt-1 login_container">
                <button type="button" name="button" id="login" class="btn login_btn">Login</button> 
            </div>
            </form>
            <div class="mt-3 mb-1">
                <div class="d-flex justify-content-center links">
                    Don't have an account? <a href="registration.php" class="ml-2">Sign Up</a>
                </div>
                <div class="d-flex justify-content-center">
                    <a href="#">Forgot your password?</a>
                </div>
            </div>
        </div>
    </div>
</div>
<script src="http://code.jquery.com/jquery-3.3.1.min.js"
              integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
              crossorigin="anonymous"></script>
<script type="text/javascript" src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script>
    $(function(){
        $('#login').click(function(e){

            var valid = this.form.checkValidity();

            if(valid){
                var username = $('#username').val();
                var password = $('#password').val();
                var email = $('#email').val();
            }

            e.preventDefault();

            $.ajax({
                type: 'POST',
                url: 'jslogin.php',
                data:  {username: username, password: password, email: email},
                success: function(data){
                    alert(data);
                    if($.trim(data) === "1"){
                        setTimeout(' window.location.href =  "index.php"', 1000);
                    }
                },
                error: function(data){
                    alert('There were errors while doing the operation.');
                }
            });

        });
    });
</script>
</body>
</html>

无论我输入什么，它都不会说什么。

错误

如果您查看图像，当我单击提交时，它什么也没说。在解决此问题之前，我将对此进行评论。

我做错什么了吗？

我查看了关于 SOF 的教程和问题，甚至查看了手册。

标签： phphtml

php - 当我单击提交时，没有任何回声。为什么？

问题描述

解决方案

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