PHP - Redirect and send data via POST
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')开发者_运维知识库;
And to do this sending data via POST?
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.
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="' . $v . '"> ';
}
}
?>
</form>
</body>
</html>
<?php
exit;
}
Another solution if you would like to avoid a curl call and have the browser redirect like normal and mimic a POST call:
save the post and do a temporary redirect:
function post_redirect($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..
A better and neater solution would be to use $_SESSION:
Using the session:
$_SESSION['POST'] = $_POST;
and for the redirect header request use:
header('Location: http://www.provider.com/process.jsp?id=12345&name=John', true, 307;)
307 is the http_response_code you can use for the redirection request with submitted POST values.
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);
/**
* 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', $php_errormsg");
}
}
Use curl for this. Google for "curl php post" and you'll find this: http://www.askapache.com/htaccess/sending-post-form-data-with-php-curl.html.
Note that you could also use an array for the CURLOPT_POSTFIELDS option. From php.net docs:
The full data to post in a HTTP "POST" operation. To post a file, prepend a filename with @ and use the full path. This can either be passed as a urlencoded string like 'para1=val1¶2=val2&...' or as an array with the field name as key and field data as value. If value is an array, the Content-Type header will be set to multipart/form-data.
Your going to need CURL for that task I'm afraid. Nice easy way to do it here: http://davidwalsh.name/execute-http-post-php-curl
Hope that helps
Alternatively, setting a session variable before the redirect and test it in the destination url, can solve this problem for me.
You have to open a socket to the site with fsockopen and simulate a HTTP-Post-Request.
Google will show you many snippets how to simulate the request.
I used the following code to capture POST data that was submitted from form.php and then concatenate it onto a URL to send it BACK to the form for validation corrections. Works like a charm, and in effect converts POST data into GET data.
foreach($_POST as $key => $value) {
$urlArray[] = $key."=".$value;
}
$urlString = implode("&", $urlArray);
echo "Please <a href='form.php?".$urlString."'>go back</a>";
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);
}
}
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);
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 !
加载中,请稍侯......
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