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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 |
|---|---|
| 705 | /** |
| 706 | * Filters the arguments for initializing a site. |
| 707 | * |
| 708 | * @since 5.1.0 |
| 709 | * |
| 710 | * @param array $args Arguments to modify the initialization behavior. |
| 711 | * @param WP_Site $site Site that is being initialized. |
| 712 | * @param WP_Network $network Network that the site belongs to. |
| 713 | */ |
| 714 | $args = apply_filters( 'wp_initialize_site_args', $args, $site, $network ); |
| 715 | |
| 716 | $orig_installing = wp_installing(); |
| 717 | if ( ! $orig_installing ) { |
| 718 | wp_installing( true ); |
| 719 | } |
| 720 | |
| 721 | $switch = false; |
| 722 | if ( get_current_blog_id() !== $site->id ) { |
| 723 | $switch = true; |