PHP

301 redirect

#In .htaccess
  
Redirect 301 /old-page https://www.example.com/new-page

301 redirect

301, "Moved Permanently"—recommended for SEO
302, "Found" or "Moved Temporarily"
Meta Refresh 

301 redirect http to https

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

how to create a 301 redirect with domain.com

RewriteEngine On 
RewriteCond %{HTTP_HOST} ^DOMAIN.com [NC]
RewriteCond %{SERVER_PORT} 80 
RewriteRule ^(.*)$ https://www.DOMAIN.com/$1 [R=301,L]

Simple 301 redirect

<?php
header("Location: https://softhunt.net", true, 301);
exit();
?>

301 redirect

#http to https and www to non-www
RewriteEngine On
RewriteCond %{HTTPS} off [OR]
RewriteCond %{HTTP_HOST} ^www. [NC]
RewriteCond %{HTTP_HOST} ^(?:www.)?(.+)$ [NC]
RewriteRule ^ https://%1%{REQUEST_URI} [L,NE,R=301]

Permanent 301 redirect

<?php
//* Permanently redirect page
header("Location: new_page.php",TRUE,301);
?>