PHP QueryString with Array

Question

What am i doing wrong here?

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);
}

    ?>

ERROR MESSAGE: Access Denied! I'm new to PHP, so i dont know how to build a query string with multiple fields error. I'm doing with with an array with key as "field value" cause i think its easier. But i'm not this is the best approach, and even if it is, i'm not sure im doing this good. Any help would be appreciated, John

Are you getting Access denied (403) from the web server? echo out the result of the string passed to your header() calls 'Location: http://' . $server_dir . $firstPage . $query_string tto be sure that it is a valid URL and is going to where you expect it to go — Michael Berkowski
– Michael Berkowski, Commented Jul 27, 2011 at 13:18
"Access denied" when? What operation does the user perform, and where do you see "Access Denied"? This is unlikely to be anything to do with your query string. — Colin Fine
– Colin Fine, Commented Jul 27, 2011 at 13:20

AlexL · Accepted Answer · 2011-07-27 13:28:15Z

0

http_build_query function only builds the query. You will need to prepend it with the question mark to mark the beginning of the query string.

Lets take your code:


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

You will need to insert "?" between firstPage and query_string :


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

answered Jul 27, 2011 at 13:28

AlexL

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