Архивы Web server - Page 6 of 10

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:

Access-Control-Allow-Origin (CORS)

CORS (resource sharing between different sources) is browser technology that allows a web page to access resources from another domain.

To enable CORS in Apache2, you must first activate the headers module, in Ubuntu Server, you can do this with the command:

Information about using .htaccess

.htaccess – (hypertext access) additional configuration file for the Apache web server and similar servers.
In order for the file to be processed by the Apache server, the “AllowOverride All” option must be in the configuration file for the specified directory.

Install and configure Nginx

nginx (engine x) — it is a web server and reverse proxy server, as well as a mail proxy server.

Install on Ubuntu with the command:

Setting up nginx logs

I will give examples of setting logging for nginx.

To change the log settings, open the nginx configuration file in any text editor:

Solution PHP Notice: Use of undefined constant x — assumed ‘x’

I once noticed the following notification when writing a PHP script:

PHP Notice:  Use of undefined constant uid - assumed 'uid' in /scripts/file.php on line 31
PHP Notice:  Use of undefined constant value - assumed 'value' in /scripts/file.php on line 32

Continue reading “Solution PHP Notice: Use of undefined constant x — assumed ‘x’”

Script to send SMS via Goip4 gateway for ABillS

I will give an example of a PHP script to which I send SMS messages through the GoIP4 gateway.

First, we choose tariffs with only monthly charges:

Install phpMyAdmin

phpMyAdmin is a web application written in PHP that allows you to administer MySQL databases through a browser.

The easiest way to install phpMyAdmin is to download the archive with the latest version from the official website www.phpmyadmin.net and unpack it into the desired www directory, then you can open http://HOST/phpmyadmin/setup/ in the browser and follow the instructions. After that, move the config.inc.php file to the phpmyadmin root directory and close access to /setup/ or delete it altogether.
Continue reading “Install phpMyAdmin”

How to hide the Jetpack menu for users

To hide the Jetpack menu for subscribers and regular users, it’s enough to add the following code to the active theme functions.php file:

function ap_remove_jetpack_page( ) {
if ( class_exists( 'Jetpack' ) && !current_user_can( 'manage_options' ) ) {
remove_menu_page( 'jetpack' );
}
}
add_action( 'admin_menu', 'ap_remove_jetpack_page', 999 );

Also for this there are several plugins, but those that came across to me are quite old.

Jetpack error solution “Verification secrets not found”

I noticed some error when activating Jetpack:

The Jetpack server encountered the following client error: Verification secrets not found

The reason was found in restricted access over IP through .htaccess to the file wp-login.php, as it turned out that access to this file can not be blocked if Jetpack is used.

That’s why I found lines restricting access and commented them out by putting the # (before each line) symbol (the lines can be in the .htaccess file located in the root directory with WordPress and in the web server configuration files), for example:

#        <files wp-login.php>
#                order allow,deny
#                allow from 127.0.0.1 192.168.2.50
#        </files>

If the lines were in .htaccess, then Jetpack can already be activated, if in the configuration file of the web server, then you still need to restart it to apply the changes.

Also, an error can occur because of conflicting plugins, you can try to turn them off in turn.