如何在发送到URL之前保存表单数据

Question

I try to save data from a FORM to file. But when 'submit' to external URL my script doesn't see $_POST array. How to save $_POST which I send not receive.

I can save $_POST data I received (I sent to my script and save as post_array.txt). But I have to send it to external url. I tried to receive and resend saved $_POST using cURL but I cannot do redirect with $_POST. So my customer stays on my page but should be redirected to payment page with $_POST data.

html : <form method="POST" action="cert.php">
php :  cert.php

file_put_contents('post_array.txt', $_POST, FILE_APPEND);
$url = 'https://sandbox.przelewy24.pl/trnDirect';
$fields =['p24_merchant_id' => $_POST['p24_merchant_id'],
        'p24_session_id' => $_POST['p24_session_id'],
        'p24_amount' => $_POST['p24_amount'],
        'p24_currency' => $_POST['p24_currency'],
        'p24_sign' => md5($_POST['p24_session_id'].'|'.$_POST['p24_merchant_id'].'|'.$_POST['p24_amount'].'|'.$_POST['p24_currency'].'|'.$_POST['p24__sign'])];

//open connection
$ch = curl_init($url);

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
// this cURL dosnt have a redirect option coz it doesnt work for me :(

// execute!
$response = curl_exec($ch);
file_put_contents('response.txt', $response, FILE_APPEND);
// close the connection, release resources used
curl_close($ch);

Because cURL doesnt work as expected i want to direct send $_POST do external page. (it works well , but i dont have saved $_POST in my file) How to save $_POST without sending data to my server/script ?

Answer 1

• You can make a redirect with http status 307 developer.mozilla.org/en-US/docs/Web/HTTP/Status/307 In this case also body will be redirected.
• Another option is to do it with js, first make a request to you server, receive successful answer and then make second request using js to external URL with POST method. Maybe you will need some hidden form to do it in browser.