What are some common methods to ensure secure communication between servers in PHP?

One common method to ensure secure communication between servers in PHP is by using HTTPS protocol. This can be achieved by obtaining an SSL certificate and configuring the server to use HTTPS. Another method is to use encryption techniques such as SSL/TLS to secure the data being transmitted between servers. 

// Example of sending a secure request using cURL with HTTPS
$url = 'https://example.com/api';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

Keywords

SSL HTTPS TLS cURL encryption

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