autotutorial

Hi I’m sorry for your problem https://codex.wordpress.org/Create_A_Network
wordpress redirects if the domain does not match, also keep in mind that all javascript, css files must be replaced with the appropriate domain.
For not multisite:

https://wordpress.org/plugins/multiple-domain-mapping-on-single-site/ for page,post etc.

https://wordpress.org/plugins/multiple-domain/ for domain

There is a way to add domain based logic to my themes?
Absolutely. You can use the MULTPLE_DOMAIN_DOMAIN constant to get the current domain. Just notice that since this
value is checked against plugin settings, it may not reflect the actual domain in HTTP_HOST element from $_SERVER or
user’s browser. It also may include the host port when it’s different than 80 (default HTTP port) or 443 (default HTTPS
port).

For multisite and multinetwork

https://wordpress.org/plugins/wp-multi-network/ read all the instructions before installing

I’m sorry I don’t know how it’s possible to change dynamically on the multisite
Multisite WordPress 4.5 or higher, secondary sites can be associated with non-network top-level domains without any plugins.

WordPress Multisite Domain Mapping

Prove this

// Multisite
define( 'MULTISITE',           true                  );
define( 'SUBDOMAIN_INSTALL',   false                 );
define( 'PATH_CURRENT_SITE',   '/'                   );
//or /blog/
define( 'DOMAIN_CURRENT_SITE', $_SERVER['HTTP_HOST'] );

// Likely not needed anymore (your config may vary)
//define( 'SITE_ID_CURRENT_SITE', 1 );
//define( 'BLOG_ID_CURRENT_SITE', 1 );

// Uncomment and change to a URL to funnel no-site-found requests to
//define( 'NOBLOGREDIRECT', '/404/' );

/**
 * These are purposely set for maximum compliance with multisite and
 * multinetwork. Your config may vary.
 */
define( 'WP_HOME',    'http://' . $_SERVER['HTTP_HOST'] );
define( 'WP_SITEURL', 'http://' . $_SERVER['HTTP_HOST'] );

and

// Cookies
//define( 'COOKIEHASH',         md5( 'yourrootdomain.com' ) );
define( 'COOKIE_DOMAIN',      ''        );
define( 'COOKIEPATH',         '' );
define( 'SITECOOKIEPATH',     '' );
define( 'ADMIN_COOKIE_PATH',  SITECOOKIEPATH );
//define( 'TEST_COOKIE',        'thing_test_cookie' );
//define( 'AUTH_COOKIE',        'thing_'          . COOKIEHASH );
//define( 'USER_COOKIE',        'thing_user_'     . COOKIEHASH );
//define( 'PASS_COOKIE',        'thing_pass_'     . COOKIEHASH );
//define( 'SECURE_AUTH_COOKIE', 'thing_sec_'      . COOKIEHASH );
//define( 'LOGGED_IN_COOKIE',   'thing_logged_in' . COOKIEHASH );

this is an example of a subdirectory installation for the root, blog_id and site_id will always be 1 for the network.
read the last message for cookie dynamics https://wordpress.org/support/topic/multisite-single-database-in-subdirectories-with-different-domain-names/#post-11506866 for path /blog/ and /

• This reply was modified 7 years ago by autotutorial.
• This reply was modified 7 years ago by autotutorial.

the last update of the plugin dates back two years ago https://wordpress.org/plugins/equal-height-columns/ to use it I manually modify the code or search for more

if from the site 5 loads foto.png via ftp you find it in this path wp-content/blogs.dir/5/files/foto.png ?

any host indicates remote access to any ip while the server is blocked on the local ip. I’m glad you solved it and after reading that a charity site I can claim to have done something good for today 🙂
https://mariadb.com/kb/en/library/configuring-mariadb-for-remote-client-access/

stef the plugin really simple ssl modify home and site in https inside the database for this there is the procedure described by me.

• This reply was modified 7 years ago by autotutorial.

contact your hosting currently you see the page of your hosting and not of your domain http://physicsclass.ml/ … you will have wrong to configure the DNS

When you have solved the problem with your dns and want to disable really simple ssl go here https://really-simple-ssl.com/knowledge-base/uninstall-websitebackend-not-accessible/
also make sure that with filezilla and after enabling the hidden files that in the .haccess file there are no redirects in https

• This reply was modified 7 years ago by autotutorial.

@serafinnyc the cache is not needed on wp-admin / indeed creates problems. If it is an installation from wordpress.org the hosting cannot work miracles while if it is wordpress adapted with cloudflare from your hosting it can avoid the problem of redirects and the cache. However jetpack that is managed by automatic (the one who manages wordpress) indicates how to disable the cache for wp-admin /.

I agree that the configurations for cloudflare are wrong, you have to talk to your hosting because we are talking about wordpress and there is hardly anyone who can help you.

Options -indexes

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule  ^[_0-9a-zA-Z-]+/(wp-(content|admin|includes).*) $1 [L]
RewriteRule  ^[_0-9a-zA-Z-]+/(.*\.php)$ $1 [L]
RewriteRule . index.php [L]
</IfModule>

# END WordPress

Delete all htaccess files and only create this one in the main root.
upload a new image and check if you see it in the media library, if you see it it means that after a certain date the media library no longer shows the old uploads.