Question

我在这里做错了什么？

firstpage.php

<html>
    <body>
        <?php
        if (!isset($_GET['error']))
            $error=array();
        else
            $error = $_GET['error'];
        ?>
        <script>
            function clearText(field){
                if (field.defaultValue == field.value) field.value = '';
                else if (field.value == '') field.value = field.defaultValue;

            }
        </script>
        <?php

        foreach($error as $key => $value){
            if ($value != '')
                echo '<p style="color:red;">', $value, '</p>';
        }
        ?>


        <form method="GET" action="validar.php">

            First Name: <input type="text" name="firstname" value="first name here" onFocus="clearText(this)" onBlur="clearText(this)"> <br>
            Last Name: <input type="text" name="lastname" value="last name here" onFocus="clearText(this)" onBlur="clearText(this)"> <br><br>

            <input type="submit" value="SEND">

        </form>

    </body>
</html>

secondPage.php

<?php
# confirmation.php

$firstname = $_GET['firstname'];
$latname = $_GET['lastname'];

?>
<html>
<body>
<h3>Congratulations <?php echo $firstname; $lastname; ?>, you have been successfully registered</h3>

</body>
</html>

validar.php

<?php

    $firstname = $_GET['firstname'];
    $lastname = $_GET['lastname'];

    $error['firstname'] = '';
    $error['lastname'] = '';

    $firstPage = "firstPage.php";
    $secondPage = "secondPage.php";

    $server_dir = $_SERVER['HTTP_HOST'] . rtrim(dirname($_SERVER['PHP_SELF']), '/\\') . '/';

    if($firstname == "first name here"){
        $firstname == "";
        $error['firstname'] = 'Please introduce firstname <br>';
    }

    if($lastname == "last name here"){
        $lastname == "";
        $error['lastname'] = 'Please introduce last <br>';
    }

    if($error == ''){
        $query_string = '?firstname=' . $firstname;
        header('Location: http://' . $server_dir . $secondPage . $query_string);
    }
    else {

    $query_string = http_build_query($error);
    header('Location: http://' . $server_dir . $firstPage . $query_string);
}

    ?>

错误消息：拒绝访问！我是PHP的新手，所以我不知道如何构建一个包含多个字段错误的查询字符串。我正在使用带有键作为“字段值”的数组，因为我认为它更容易。但我不是这是最好的方法，即使是这样，我也不确定我是不是做得好。任何帮助，将不胜感激，约翰

Answer 1

http_build_query函数仅构建查询。您需要在问号前加上标记查询字符串的开头。

让我们拿你的代码：


    header('Location: http://' . $server_dir . $firstPage . $query_string);

您需要插入“？”在firstPage和query_string之间：


    header('Location: http://' . $server_dir . $firstPage . '?' . $query_string);

带有Array的PHP QueryString

1 个答案: