www redirect to https code example

Example 1: http to https htaccess

RewriteEngine On
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://www.yourdomain.com/$1 [R,L]

Example 2: how to redirect http to https

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Example 3: http redirect to https htaccess

RewriteEngine On 
RewriteCond %{HTTPS} !on 
RewriteCond %{REQUEST_URI} !^/[0-9]+\..+\.cpaneldcv$ 
RewriteCond %{REQUEST_URI} !^/\.well-known/pki-validation/[A-F0-9]{32}\.txt(?:\ Comodo\ DCV)?$ 
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Example 4: redirect https

if ($_SERVER['HTTPS'] != "on") 
{
    $url = "https://". $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
    header("Location: $url");
    exit;
}

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Misc Example