比较用户提交给数据库的值，根据结果重定向

debugcn 发表于 Dev

加勒特·坦纳

我正在尝试建立一个网页，允许用户输入代码（仅数字和字母）。根据代码是否为“优胜者”，它将代码重定向到我网站上的“优胜者”页面。否则，它将重定向到“丢失”页面。我是新手，但我正在尝试学习！

HTML：

<h1>Break Open Your Code</h1>
<form target="_blank" action="phpfile.php" method="POST">
    <input type="hidden" name="code" value="1" />
    <label>Enter Your Code Here</label> 
    <input type="text" name="answer" /> 
    <input onclick="window.location.href = 'results-page.html';" type="submit" value="Check your Code" />
</form>

PHP：

<?php
// Connect to your MySQL database
$dbhst = "localhost";
$dbnme = "mydatabase"; 
$bdusr = "myusername";
$dbpws = "mypassword";

// Using PDO to connect

$conn = new PDO('mysql:host='.$dbhst.';dbname='.$dbnme, $bdusr, $dbpws);

// Getting variables
$answer = $_POST['answer'];
$questionID = $_POST['questionID'];

// Comparing answers

try {

    $stmt = $conn->prepare('SELECT * FROM table_with_answers WHERE question='" . $questionID . "' and answer='". $answer . "' LIMIT 0,1');
    $stmt->execute();

    $result = $stmt->fetchAll();

    if ( count($result) ) {
        foreach($result as $row) { 
            echo 'Congrats, you've entered a correct code';
            // Do Something Else
        }
    } else {
        echo 'Your code did not win. Please try again.';
        exit;
    }
} catch(PDOException $e) {
    echo 'ERROR: ' . $e->getMessage();
}
?>

Lexa Vey

去掉 onclick="window.location.href = 'results-page.html';"

并修改 <input type="hidden" name="code" value="1" />

至 <input type="hidden" name="questionID" value="1" />

HTML：

<h1>Break Open Your Code</h1>
<form target="_blank" action="phpfile.php" method="POST">
    <input type="hidden" name="questionID" value="1" />
    <label>Enter Your Code Here</label> 
    <input type="text" name="answer" /> 
    <input type="submit" value="Check your Code" />
</form>

将html文件保存到form.html

现在修改phpfile.php

header("Location: winner.html");如果代码正确，则添加

header("Location: losing.html");如果代码不正确，则添加

PHP的：

<?php
// Connect to your MySQL database
$dbhst = "localhost";
$dbnme = "mydatabase"; 
$bdusr = "myusername";
$dbpws = "mypassword";

// Using PDO to connect

$conn = new PDO('mysql:host='.$dbhst.';dbname='.$dbnme, $bdusr, $dbpws);

// Getting variables
$answer = $_POST['answer'];
$questionID = $_POST['questionID'];

// Comparing answers

try {

    $stmt = $conn->prepare("SELECT * FROM table_with_answers WHERE question='" . $questionID . "' and answer='". $answer . "' LIMIT 0,1");
    $stmt->execute();

    $result = $stmt->fetchAll();

    if ( count($result) ) {
        foreach($result as $row) { 
            // echo 'Congrats, you've entered a correct code';
            header("Location: winner.html");
        }
    } else {
        // echo 'Your code did not win. Please try again.';
        header("Location: losing.html");
        exit;
    }
} catch(PDOException $e) {
    echo 'ERROR: ' . $e->getMessage();
}
?>

创建html Winner.html和Lost.html

winner.html： Congrats, you've entered a correct code

missing.html： Your code did not win. Please try again.

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