I don’t know what this method called : Reverse Proxy , Tunneling, Bypassing ?
Imagine, we have 3 website :
http://exampleapi.com - API or Service provider http://example1.com - I bought the API for this Website from example.com http://example2.com - My New website
1. I bought the API or Payment Gateway service for example1.com , the website don’t have any content , forms, data. (Just to get the API)
2. Now, I want create tunnel between example2.com | example1.com | exampleapi.com. I mean, get all request from example2.com , send to example1.com and pass the data to exampleapi.com.
3. And after response, the exampleapi.com.com send data to example1.com and example2.com will receive it and showing to the user.
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Answer
Here’s an example of how you can write your code. You can simulate this on a single site like I did. On my site, I created 3 folders:
- example1
- example2
- exampleapi
Under each of them, I create an index.php file. Let’s look at them.
yoursite.com/exampleapi/index.php
<?php header("Content-Type: application/text"); echo 'Titanic vs. Iceberg';
The output of this is plaintext
Titanic vs. Iceberg
We’ll call this API from example1.
yoursite.com/example1/index.php
This site’s code will have it’s own data and
will pull data from exampleapi/index.php like so:
<?php // call exampleapi $url = 'https://yoursite.com/exampleapi/index.php'; $curl = curl_init($url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json' ]); $response = curl_exec($curl); curl_close($curl); // show data header("Content-Type: application/json"); $data = [ 'name' => 'John', 'age' => 25, 'data_from_exampleapi' => $response ]; echo json_encode($data);
Output of this code will be
{"name":"John","age":25,"data_from_exampleapi":"Titanic vs. Iceberg"}
We’ll call this from example2.
yoursite.com/example2/index.php
This will be your webpage. I have simulated a call. When the button is pressed, PHP will send a request to example1/index.php. And that page will send a request to exampleapi/index.php, fetch the data, combine the fetched data with its own data and send it back to example2/index.php
<?php function fetchInformation() { $url = 'https://yoursite.com/example1/index.php'; $curl = curl_init($url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json' ]); $response = curl_exec($curl); curl_close($curl); return $response; } ?> <!doctype html> <body> <form action="./" method="get"> <p> When you press this button, PHP will try to get data from example1/index.php and show information below </p> <input type="submit" value="Get data from API" name="mybutton" id="mybutton"> </form> <?php // only if button is pressed, fetch information if ($_SERVER['REQUEST_METHOD'] === 'GET') { if ( ! is_null($_REQUEST['mybutton']) ) { echo '<h3>Information received</h3>'; $response = fetchInformation(); echo '<p>' . $response . '</p>'; } } ?> </body>
When you go to yoursite.com/example2/index.php, you’ll see something like this:
When you press the button, example2/index.php -> calls example1/index.php -> calls exampleapi/index.php. Data goes in reverse and you’ll see this kind of an output:
This shows you how you can use PHP one 1 page to call API on another page. If you are in control of that another page, you can tweak code to call API from yet-another-page.