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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1903 | if ( $lang = get_bloginfo('language') ) { |
| 1904 | if ( get_option('html_type') == 'text/html' || $doctype == 'html' ) |
| 1905 | $attributes[] = "lang=\"$lang\""; |
| 1906 | |
| 1907 | if ( get_option('html_type') != 'text/html' || $doctype == 'xhtml' ) |
| 1908 | $attributes[] = "xml:lang=\"$lang\""; |
| 1909 | } |
| 1910 | |
| 1911 | $output = implode(' ', $attributes); |
| 1912 | $output = apply_filters('language_attributes', $output); |
| 1913 | echo $output; |
| 1914 | } |
| 1915 | |
| 1916 | /** |
| 1917 | * Retrieve paginated link for archive post pages. |
| 1918 | * |
| 1919 | * Technically, the function can be used to create paginated link list for any |
| 1920 | * area. The 'base' argument is used to reference the url, which will be used to |
| 1921 | * create the paginated links. The 'format' argument is then used for replacing |