How to Perform an HTTP POST Request Using PHP's cURL Library?

PHP, cURL, and HTTP POST

This question seeks guidance on performing an HTTP POST request using PHP's cURL library. Specifically, the goal is to send data in a specific format to a specified website and receive a response.

Solution:

To achieve this, the provided code example provides a step-by-step guide on how to set up and execute a cURL POST request. It initializes a cURL session, specifies the target URL, sets POST parameters, and finally sends the request. The code also includes error handling and provides a simple example of processing the server's response.

The code snippet below shows the PHP code for the solution:

//
// A very simple PHP example that sends a HTTP POST to a remote site
//

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL,"http://www.example.com/tester.phtml");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 
          http_build_query(array('postvar1' => 'value1')));

// Receive server response ...
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$server_output = curl_exec($ch);

curl_close($ch);

// Further processing ...
if ($server_output == "OK") { ... } else { ... }

By following these steps, you can successfully perform an HTTP POST request using PHP's cURL library.

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