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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 |
---|---|
2827 | /** |
2828 | * Filter the language attributes for display in the html tag. |
2829 | * |
2830 | * @since 2.5.0 |
2831 | * @since 4.3.0 Added the `$doctype` parameter. |
2832 | * |
2833 | * @param string $output A space-separated list of language attributes. |
2834 | * @param string $doctype The type of html document (xhtml|html). |
2835 | */ |
2836 | return apply_filters( 'language_attributes', $output, $doctype ); |
2837 | } |
2838 |
|
2839 | /** |
2840 | * Displays the language attributes for the html tag. |
2841 | * |
2842 | * Builds up a set of html attributes containing the text direction and language |
2843 | * information for the page. |
2844 | * |
2845 | * @since 2.1.0 |