How to synchronize two WordPress

The data articles of the wordpress website all rely on sql database files for writing and reading. The article data varies depending on the reading situation of the website. However, many space providers limit their database external link connections, which means they can only be used on the same host. You can purchase a database that can connect external links. When installing the website, the domain names with and without WWW are directly bound here. In this way, no matter which website writes articles, they will be synchronized to the other website, fully achieving the synchronization effect!

Speaking of this, careful friends will say that the databases of WordPress websites are all bound to the same domain name. A slight change in the characters may cause the management background to crash. not open. This is indeed the case. When many friends change their website domain name, they find a table file similar to this in the database: wp_options. Just replace the "siteurl" and "home" below with your new domain name. This method has little impact on binding the same host with WWW or without WWW, but for domain names of different hosts it means: binding one, the other is opened abnormally! Regarding this problem, my friend learned from the "WordPress method of binding multiple domain names" on the Internet.

Related recommendations: "WordPress Tutorial"

Open the wp-config.php file in the WordPress directory and add the following content in it:

/* Enable multiple domains access. */
$current_sitename= $_SERVER[‘HTTP_HOST’];
if ($current_sitename == “www.AAA.com”) {
    define(“WP_SITEURL”, “http://www.AAA.com”);
    define(“WP_HOME”, “http://www.AAA.com”);
} elseif ($current_sitename == “www.BBB.net”) {
    define(“WP_SITEURL”, “http://www.BBB.net”);
    define(“WP_HOME”, “http://www.BBB.net”);
}

Note that the above code needs to be added in front of the following code.

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . ‘wp-settings.php’);

The above code modifies the WP_SITEURL and WP_HOME constants based on the parameters in the HTTP request. WordPress relies on these two constants to determine the address of the site.
Since the constants defined in the configuration file have a higher priority and cover the site addresses defined in the database, multiple domain names can be accessed at the same time.

However, this method is accused of being "violent" and not very friendly to search engines. It is suspected of being directly used as a mirror website. But I personally think that just having the same second-level and top-level domain name with WWW and without WWW has no impact!

This article only expresses a solution. As for the subsequent processing methods such as 301 redirection, please modify it according to the actual situation!

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