What are some common methods for ensuring secure communication between a PHP script and a server using HTTPS?

To ensure secure communication between a PHP script and a server using HTTPS, you can use cURL to make requests over SSL/TLS. This involves setting the CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST options to true to verify the SSL certificate of the server. Additionally, you can set the CURLOPT_CAINFO option to specify the path to a CA certificate bundle for verifying the server's certificate. 

$url = 'https://example.com/api';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_CAINFO, '/path/to/cacert.pem');

$response = curl_exec($ch);

if($response === false){
    echo 'cURL error: ' . curl_error($ch);
} else {
    echo $response;
}

curl_close($ch);

Keywords

SSL TLS cURL OpenSSL Certificate Verification

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