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Question

首先，我要感谢Codecourse的教程。一切都很好，但是我想把错误显示在我的表td中。也许是个愚蠢的问题，但我是个初学者，没有运气就试着自己解决了。

<?php
require_once 'core/init.php';

if(Input::exists()) {
    if(Token::check(Input::get('token'))) {

        $validate = new Validate();
        $validation = $validate->check($_POST, array(
            'username' => array('required' => true),
            'password' => array('required' => true)
        ));

        if($validate->passed()) {
            $user = new User();

            $remember = (Input::get('remember') === 'on') ? true : false;
            $login = $user->login(Input::get('username'), Input::get('password'), $remember);

            if($login) {
                Redirect::to('index.php');
            } else 
                echo "Incorrect username or password";

        } else {
            foreach($validate->errors() as $error) {
                echo $error, '<br>';
            }
        }
    }
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
    <body>
        <form action='' method='post'>
            <table>
                <tr>
                    <td><!-- display errors here --></td>
                    <td><!-- and/or here --></td>
                </tr>
                <tr>
                    <td><label for='username'>Username</label></td>
                    <td><input type='text' name='username' id='username'></td>
                </tr>
                <tr>
                    <td><label for='password'>Password</label></td>
                    <td><input type='password' name='password' id='password'></td>
                </tr>
                <tr>
                    <td></td>
                    <td><label for='remember'><input type='checkbox' name='remember' id='remember'>Remember me</label></td>
                </tr>
                <tr>
                    <td><input type='hidden' name='token' value='<?php echo Token::generate(); ?>'></td>
                    <td><input type='submit' value='Login'></td>
                </tr>
            </table>   
        </form>
    </body>
</html>

Answer 1

如下所示：

<?php
require_once 'core/init.php';

$errors = array(); //storage variable

if(Input::exists()) {
    if(Token::check(Input::get('token'))) {

        $validate = new Validate();
        $validation = $validate->check($_POST, array(
            'username' => array('required' => true),
            'password' => array('required' => true)
        ));

        if($validate->passed()) {
            $user = new User();

            $remember = (Input::get('remember') === 'on') ? true : false;
            $login = $user->login(Input::get('username'), Input::get('password'), $remember);

            if($login) {
                Redirect::to('index.php');
            } else 
                $errors[] = "Incorrect username or password"; //add other errors in too!

        } else {
            foreach($validate->errors() as $error) {
                $errors[] = $error; //add error to storage
            }
        }
    }
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
    <body>
        <form action='' method='post'>
            <table>
                <tr>
                    <td><!-- display errors here --></td>
                    <td>
                        <?php foreach( $errors as $error ) : ?>
                            <?php echo $error; // output ?>
                        <?php endforeach; ?>
                    </td>
                </tr>
                <tr>
                    <td><label for='username'>Username</label></td>
                    <td><input type='text' name='username' id='username'></td>
                </tr>
                <tr>
                    <td><label for='password'>Password</label></td>
                    <td><input type='password' name='password' id='password'></td>
                </tr>
                <tr>
                    <td></td>
                    <td><label for='remember'><input type='checkbox' name='remember' id='remember'>Remember me</label></td>
                </tr>
                <tr>
                    <td><input type='hidden' name='token' value='<?php echo Token::generate(); ?>'></td>
                    <td><input type='submit' value='Login'></td>
                </tr>
            </table>   
        </form>
    </body>
</html>

只需将它们存储在一个变量中，然后将它们输出到您想要的地方，非常直接。

Answer 2

将所有错误推送到数组中，然后在表中显示所有这些错误。

Array_push：http://php.net/manual/en/function.array-push.php

Array_map：http://php.net/manual/en/function.array-map.php

示例：https://gist.github.com/anonymous/d6749095ed20a995ec8697ef203d164f