Php 如何在Laravel中显示客户端错误

在Laravel 4.2中，如何使用Laravel控制器在客户端显示错误

我想显示此错误：

D:\xampp\htdocs\guestlara\app\views\index.php（51）：illumb\Exception\Handler->handleError（8，“未定义变量…”，“D:\xampp\htdocs…”，51，数组）

这是HTML代码：

<form action="login_user" method="post">
    <div class="alert alert-info">
        Message
    </div>
    <div class="form-group">
        <label for="email">Email address</label>
        <input class="form-control" name="email" placeholder="Enter Email Address" />
        <div class="error"><?php echo $messages; ?></div>
    </div>
    <div class="form-group">
        <label for="password">Password</label>
        <input class="form-control" name="password" placeholder="Enter Password" />
        <div class="error"><?php echo $messages; ?></div>
    </div>

    <input type="submit" name="submit" value="Login" class="btn btn-default">
    &nbsp;&nbsp;<a href="register"><input type="button" name="register" value="Register" class="btn btn-default"></a>
    &nbsp;&nbsp;<a href="forgot-password"><input type="button" name="forgot-password" value="forgot-password" class="btn btn-default"></a>                                          
</form>

消息
电子邮件地址
密码

检查教程可能重复

<form action="login_user" method="post">
    <div class="alert alert-info">
        Message
    </div>
    <div class="form-group">
        <label for="email">Email address</label>
        <input class="form-control" name="email" placeholder="Enter Email Address" />
        <div class="error"><?php echo $messages; ?></div>
    </div>
    <div class="form-group">
        <label for="password">Password</label>
        <input class="form-control" name="password" placeholder="Enter Password" />
        <div class="error"><?php echo $messages; ?></div>
    </div>

    <input type="submit" name="submit" value="Login" class="btn btn-default">
    &nbsp;&nbsp;<a href="register"><input type="button" name="register" value="Register" class="btn btn-default"></a>
    &nbsp;&nbsp;<a href="forgot-password"><input type="button" name="forgot-password" value="forgot-password" class="btn btn-default"></a>                                          
</form>