Wordpress global variables

We often need to call global variables of the wordpress system during theme development or plug-in development using wordpress, such as the post object $ post, wordpress version $ wp_version, database Object $ wp_query, etc. If we understand these objects, It is very helpful for our wordpress team to perform secondary development.

If you want to access a global variable in your code, the first thing to do is to declare this variable with global: global $ variable;

　　Internal cycle variable

In a loop, these global variables are set to store information about the page currently being processed.

$ Post the entire post object.

$ Authordata (object) returns an object containing information about the author, which can be displayed on the document details page.

$ Currentday

$ Currentmonth the month when the article is published

The number of pages in the $ pages (int) post, used for paging.

$ Multipage (boolean) returns true if post has multiple pages. Related to $ page and $ pages.

$ More (boolean) returns true. If there are multiple pages in the article, it is related to $ page and $ pages.

$ Numpages (int) returns the total number of pages in an article, which is related to $ page and $ pages.

　　Browser detection of global variables

If you need to check the current browser and platform, you need to use the following global variables:

$ Is_iphone (boolean) iPhone Safari

$ Is_chrome (boolean) Google Chrome

$ Is_safari (boolean) Safari

$ Is_NS4 (boolean) Netscape 4

$ Is_opera (boolean) Opera

$ Is_macIE (boolean) Mac Internet Explorer

$ Is_winIE (boolean) Windows Internet Explorer

$ Is_gecko (boolean) FireFox

$ Is_lynx (boolean) Lunix

$ Is_IE (boolean) Internet Explorer

　Web Server Detection global variables

The following is the information about the current server. It seems that there is no Nginx.

$ Is_apache (boolean) Apache HTTP Server

$ Is_IIS (boolean) Microsoft Internet Information Services (IIS)

$ Is_iis7 (boolean) Microsoft Internet Information Services (IIS) v7.x

　　Version variable

Used to check the system version information:

$ Wp_version (string) installed WordPress version

$ Wp_db_version (int) database version

$ Tinymce_version (string) installed TinyMCE version

$ Manifest_version (string) cache manifest version

$ Required_php_version (string) PHP version required by WordPress

$ Required_mysql_version (string) MySQL version required by WordPress

Others

Including global variables of some database objects:

$ Global instance of wp_query (object) WP_Query class.

$ Wp_rewrite (object) Global instance of the WP_Rewrite class.

$ Global instance of wp (object) WP class.

$ Global instance of wpdb (object) wpdb class.

$ Wp_locale (object)

$ Pagenow (string) used in wp-admin

$ Allowedposttags (array)

$ Allowedtags (array)

Reprinted Please note: http://www.54ux.com/a-2199.html