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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 |
|---|---|
| 395 | $classes = array( 'one-column' ); |
| 396 | |
| 397 | if ( 'content-sidebar' == $current_layout ) |
| 398 | $classes[] = 'right-sidebar'; |
| 399 | elseif ( 'sidebar-content' == $current_layout ) |
| 400 | $classes[] = 'left-sidebar'; |
| 401 | else |
| 402 | $classes[] = $current_layout; |
| 403 | |
| 404 | $classes = apply_filters( 'twentyeleven_layout_classes', $classes, $current_layout ); |
| 405 | |
| 406 | return array_merge( $existing_classes, $classes ); |
| 407 | } |
| 408 | add_filter( 'body_class', 'twentyeleven_layout_classes' ); |