Web server – Page 5

The problem with multiple SSL on the same IP

If there are several sites with SSL on the same IP address, then old ancient browsers that do not support SNI will not be able to determine which certificate to download and will most likely download the first one that is registered at the beginning of the web server configuration.

WordPress. Solution “cURL error 60: SSL certificate problem: unable to get local issuer certificate”

Once on one of the sites I noticed in WordPress the menu “Tools” – “Site Health” the following errors:

Email notification when users login to WordPress

Once on several sites, it was necessary to set up sending emails about each user logging into the site.

Solution of the error “cURL error 28: Operation timed out after N milliseconds”

Once on the WordPress health page (Tools – Website Health) I noticed several errors for the REST API and the Loopback request:

Installing OneALL Social Login in phpBB

I will briefly describe how to install the OneALL Social Login extension, which allows you to log in to the forum using social network accounts.

How to solve “Extension mysqli | mysql not found”

I noticed once on one of the new Ubuntu servers an error when opening phpMyAdmin – “The extension mysqli | mysql not found.”

Simple page caching

I will give an example of a simple caching of PHP pages with an interval of 600 seconds (10 minutes).

Paste at the beginning of the code:

robots.txt usage guide

robots.txt is a file with web server access restrictions for search engines.
It should be located only in the root directory of the site, and contain only lowercase letters, that is, “robots.txt”, and not “Robots.txt”.

How to remove date and author from WordPress posts?

There are several ways to disable the display of the date or the author on the recording page.
Before starting any changes, I recommend backing up the data.

Solution of the error when opening wp-admin after the update

I noticed somehow when upgrading WordPress to version 4.7 that after the update wp-admin does not open, instead of the admin window there is an empty window and in the address bar of the browser the following address: