PHP - Redirect and send data via POST

问题

I have an online gateway which requires an HTML form to be submitted with hidden fields. I need to do this via a PHP script without any HTML forms (I have the data for the hidden fields in a DB)

To do this sending data via GET:

header('Location: http://www.provider.com/process.jsp?id=12345&name=John');

And to do this sending data via POST?

回答1:

You can't do this using PHP.

As others have said, you could use cURL - but then the PHP code becomes the client rather than the browser.

If you must use POST, then the only way to do it would be to generate the populated form using PHP and use the window.onload hook to call javascript to submit the form.

回答2:

here is the workaround sample.

function redirect_post($url, array $data)
{
    ?>
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <script type="text/javascript">
            function closethisasap() {
                document.forms["redirectpost"].submit();
            }
        </script>
    </head>
    <body onload="closethisasap();">
    <form name="redirectpost" method="post" action="<? echo $url; ?>">
        <?php
        if ( !is_null($data) ) {
            foreach ($data as $k => $v) {
                echo '<input type="hidden" name="' . $k . '" value="' . $v . '"> ';
            }
        }
        ?>
    </form>
    </body>
    </html>
    <?php
    exit;
}

回答3:

Another solution if you would like to avoid a curl call and have the browser redirect like normal and mimic a POST call:

save the post and do a temporary redirect:

function post_redirect($url) {
    $_SESSION['post_data'] = $_POST;
    header('Location: ' . $url);
}

Then always check for the session variable post_data:

if (isset($_SESSION['post_data'])) {
    $_POST = $_SESSION['post_data'];
    $_SERVER['REQUEST_METHOD'] = 'POST';
    unset($_SESSION['post_data']);
}

There will be some missing components such as the apache_request_headers() will not show a POST Content header, etc..

回答4:

It would involve the cURL PHP extension.

$ch = curl_init('http://www.provider.com/process.jsp');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "id=12345&name=John");
curl_setopt($ch, CURLOPT_RETURNTRANSFER , 1);  // RETURN THE CONTENTS OF THE CALL
$resp = curl_exec($ch);

回答5:

/**
 * Redirect with POST data.
 *
 * @param string $url URL.
 * @param array $post_data POST data. Example: array('foo' => 'var', 'id' => 123)
 * @param array $headers Optional. Extra headers to send.
 */
public function redirect_post($url, array $data, array $headers = null) {
    $params = array(
        'http' => array(
            'method' => 'POST',
            'content' => http_build_query($data)
        )
    );
    if (!is_null($headers)) {
        $params['http']['header'] = '';
        foreach ($headers as $k => $v) {
            $params['http']['header'] .= "$k: $v\n";
        }
    }
    $ctx = stream_context_create($params);
    $fp = @fopen($url, 'rb', false, $ctx);
    if ($fp) {
        echo @stream_get_contents($fp);
        die();
    } else {
        // Error
        throw new Exception("Error loading '$url', $php_errormsg");
    }
}

回答6:

I found a better and neater solution so I thought that I should share it:

Use the session:

$_SESSION['POST'] = $_POST;

and for the redirect header request you should use:

header('Location: http://www.provider.com/process.jsp?id=12345&name=John', true, 307;)

307 is the htttp_response_code you could use for the redirection request with submitted POST values.

回答7:

Use curl for this. Google for "curl php post" and you'll find this: http://www.askapache.com/htaccess/sending-post-form-data-with-php-curl.html.

Note that you could also use an array for the CURLOPT_POSTFIELDS option. From php.net docs:

The full data to post in a HTTP "POST" operation. To post a file, prepend a filename with @ and use the full path. This can either be passed as a urlencoded string like 'para1=val1&para2=val2&...' or as an array with the field name as key and field data as value. If value is an array, the Content-Type header will be set to multipart/form-data.

回答8:

Your going to need CURL for that task I'm afraid. Nice easy way to do it here: http://davidwalsh.name/execute-http-post-php-curl

Hope that helps

回答9:

Alternatively, setting a session variable before the redirect and test it in the destination url, can solve this problem for me.

回答10:

You have to open a socket to the site with fsockopen and simulate a HTTP-Post-Request. Google will show you many snippets how to simulate the request.

回答11:

I used the following code to capture POST data that was submitted from form.php and then concatenate it onto a URL to send it BACK to the form for validation corrections. Works like a charm, and in effect converts POST data into GET data.

foreach($_POST as $key => $value) {
   $urlArray[] =  $key."=".$value;  
}
$urlString = implode("&", $urlArray);

echo "Please <a href='form.php?".$urlString."'>go back</a>";

回答12:

An old post but here is how I handled it. Using newms87's method:

if($action == "redemption")
{
    if($redemptionId != "")
    {
        $results = json_decode($rewards->redeemPoints($redemptionId));

        if($results->success == true)
        {
            $redirectLocation = $GLOBALS['BASE_URL'] . 'rewards.phtml?a=redemptionComplete';
            // put results in session and redirect back to same page passing an action paraameter
            $_SESSION['post_data'] = json_encode($results);
            header("Location:" . $redirectLocation);
            exit();
        }
    }
}
elseif($action == "redemptionComplete")
{
    // if data is in session pull it and unset it.
    if(isset($_SESSION['post_data']))
    {
        $results = json_decode($_SESSION['post_data']);
        unset($_SESSION['post_data']);
    }
    // if you got here, you completed the redemption and reloaded the confirmation page. So redirect back to rewards.phtml page.
    else
    {
        $redirectLocation = $GLOBALS['BASE_URL'] . 'rewards.phtml';
        header("Location:" . $redirectLocation);
    }
}

回答13:

Yes, you can do this in PHP e.g. in

Silex or Symfony3

using subrequest

$postParams = array(
    'email' => $request->get('email'),
    'agree_terms' => $request->get('agree_terms'),
);

$subRequest = Request::create('/register', 'POST', $postParams);
return $app->handle($subRequest, HttpKernelInterface::SUB_REQUEST, false);

回答14:

A workaround wich works perfectly :

In the source page,, start opening a session and assign as many values as you might want. Then do the relocation with "header" :

<!DOCTYPE html>
<html>
   <head>
       <?php
           session_start();
           $_SESSION['val1'] = val1;
           ...
           $_SESSION['valn'] = valn;
           header('Location: http//Page-to-redirect-to');
       ?>
   </head>
</html>

And then, in the targe page :

<!DOCTYPE html>
<?php
    session_start();
?>
<html>
    ...
    <body>
        <?php
            if (isset($_SESSION['val1']) && ... && isset($_SESSION['valn'])) {
                YOUR CODE HERE based on $_SESSION['val1']...$_SESSION['valn'] values
            }
        ?>
    </body>
</html>

No need of Javascript nor JQuery.. Good luck !

来源：https://stackoverflow.com/questions/3045097/php-redirect-and-send-data-via-post

标签

php

forms

post

scripting