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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 |
|---|---|
| 870 | * Filters the default context provided to a rendered block. |
| 871 | * |
| 872 | * @since 5.5.0 |
| 873 | * @since 5.9.0 The `$parent_block` parameter was added. |
| 874 | * |
| 875 | * @param array $context Default context. |
| 876 | * @param array $parsed_block Block being rendered, filtered by `render_block_data`. |
| 877 | * @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block. |
| 878 | */ |
| 879 | $context = apply_filters( 'render_block_context', $context, $parsed_block, $parent_block ); |
| 880 | |
| 881 | $block = new WP_Block( $parsed_block, $context ); |
| 882 | |
| 883 | return $block->render(); |
| 884 | } |
| 885 | |
| 886 | /** |
| 887 | * Parses blocks out of a content string. |
| 888 | * |