HTTPS Conversion Guide

Step 1: Obtain an SSL Certificate

Obtain an SSL certificate from a reputable certificate authority (CA) such as Let's Encrypt or GlobalSign.

<?php
// Generate a private key
$privateKey = openssl_pkey_new();
// Generate a public key
$publicKey = openssl_pkey_get_details($privateKey)['key'];
// Generate a certificate signing request
$csr = openssl_csr_new();
openssl_csr_add_field($csr, 'subject', 'CN=localhost');
openssl_csr_add_field($csr, 'organizationName', 'Your Organization');
openssl_csr_add_field($csr, 'organizationalUnitName', 'Your Organizational Unit');
openssl_csr_add_field($csr, 'commonName', 'localhost');
openssl_csr_sign($csr, $privateKey);
// Generate a certificate
$cert = openssl_csr_get_cert($csr);
// Write the certificate to a file
file_put_contents('cert.pem', $cert);
// Write the private key to a file
file_put_contents('privateKey.pem', $privateKey);
?>

Step 2: Configure Your Web Server

Configure your web server to use the SSL certificate and private key.

<?php
// Apache configuration

    ServerName localhost
    DocumentRoot /var/www/html
    SSLEngine on
    SSLCertificateFile /path/to/cert.pem
    SSLCertificateKeyFile /path/to/privateKey.pem
</VirtualHost>
?>

Step 3: Update Your Website's URLs

Update your website's URLs to use HTTPS instead of HTTP.

<?php
// Update URLs in your HTML files
<a href="https://www.example.com">Visit HTTPS site</a>
?>