How can variables be passed to an external website in the background using PHP?

To pass variables to an external website in the background using PHP, you can use cURL to make a POST request with the variables as data. This allows you to securely transfer data to the external website without displaying it in the URL. 

<?php
// Variables to pass
$data = array(
    'var1' => 'value1',
    'var2' => 'value2'
);

// External website URL
$url = 'https://www.externalwebsite.com';

// Initialize cURL session
$ch = curl_init($url);

// Set cURL options
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// Execute cURL session
$response = curl_exec($ch);

// Close cURL session
curl_close($ch);

// Output response from external website
echo $response;
?>

Keywords

cURL HTTP POST PHP variables API integration data transmission

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