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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 |
|---|---|
| 1884 | if ( $lang = get_bloginfo('language') ) { |
| 1885 | if ( get_option('html_type') == 'text/html' || $doctype == 'html' ) |
| 1886 | $attributes[] = "lang=\"$lang\""; |
| 1887 | |
| 1888 | if ( get_option('html_type') != 'text/html' || $doctype == 'xhtml' ) |
| 1889 | $attributes[] = "xml:lang=\"$lang\""; |
| 1890 | } |
| 1891 | |
| 1892 | $output = implode(' ', $attributes); |
| 1893 | $output = apply_filters('language_attributes', $output); |
| 1894 | echo $output; |
| 1895 | } |
| 1896 | |
| 1897 | /** |
| 1898 | * Retrieve paginated link for archive post pages. |
| 1899 | * |
| 1900 | * Technically, the function can be used to create paginated link list for any |
| 1901 | * area. The 'base' argument is used to reference the url, which will be used to |
| 1902 | * create the paginated links. The 'format' argument is then used for replacing |