PHP< form action ='XXX.php'method ='post'> var_dump（$ _ POST）为空？ [英] PHP <form action = 'XXX.php' method = 'post'> var_dump($_POST) is null?

问题描述

这是表格代码：

<div class="login_cont">
<form action="doLogin.php" method="post">
        <ul class="login">
            <li class="l_tit">管理员帐号</li>
            <li class="mb_10"><input type="text"  name="username" placeholder="请输入管理员帐号"class="login_input user_icon"></li>
            <li class="l_tit">密码</li>
            <li class="mb_10"><input type="password"  name="password" class="login_input password_icon"></li>
            <li class="l_tit">验证码</li>
            <li class="mb_10"><input type="text"  name="verify" class="login_input password_icon"></li>
            <img src="getVerify.php" alt="" />
            <li class="autoLogin"><input type="checkbox" id="a1" class="checked" name="autoFlag" value="1"><label for="a1">自动登陆(一周内自动登陆)</label></li>
            <li><input type="submit" value="" class="login_btn"></li>
        </ul>
    </form>
</div>

这是doLogin.php

this is doLogin.php

include_once '../include.php';

$username = $_POST['username'];
$password = md5($_POST['password']);
$verify = $_POST['verify'];
$session_verify = $_SESSION['verify'];
print_r($_POST);
var_dump($_SERVER);

这是var_dump（$ _ SERVER）结果

this is var_dump($_SERVER) result

为什么var_dump（$ _ POST）为空？

why var_dump($_POST) is null?

推荐答案

var_dump（$ _ POST）为空是不可能的！

It is not possible to have var_dump($_POST) is null!

当你做的时候

$username = $_POST['username'];
$password = md5($_POST['password']);
$verify = $_POST['verify'];
$session_verify = $_SESSION['verify'];
var_dump($_POST);

你会得到

array(3) { ["username"]=> string(8) "shashank" ["password"]=> string(8) "password" ["verify"]=> string(3) "123" }

如果您通过用户名，密码并验证空白甚至！

If you pass username,password and verify blank even!

 var_dump($_POST); 

将

array(3) { ["username"]=> string(0) "" ["password"]=> string(0) "" ["verify"]=> string(0) "" }

所以你发布了 var_dump（ $ _POST）为null没有任何意义或不可能。

so as you've posted var_dump($_POST) is null has does't make any sense or not possible.

有趣编辑：）

只有当您输入用户名为 null 密码时， null 等才能生成

It is only possible when you type username as null password as null etc will produce

array(3) { ["username"]=> string(4) "null" ["password"]=> string(4) "null" ["verify"]=> string(4) "null" } 

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