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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 |
---|---|
744 | * Filters the list of blocks that can contribute to the excerpt. |
745 | * |
746 | * If a dynamic block is added to this list, it must not generate another |
747 | * excerpt, as this will cause an infinite loop to occur. |
748 | * |
749 | * @since 5.0.0 |
750 | * |
751 | * @param string[] $allowed_blocks The list of names of allowed blocks. |
752 | */ |
753 | $allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks ); |
754 | $blocks = parse_blocks( $content ); |
755 | $output = ''; |
756 |
|
757 | foreach ( $blocks as $block ) { |
758 | if ( in_array( $block['blockName'], $allowed_blocks, true ) ) { |
759 | if ( ! empty( $block['innerBlocks'] ) ) { |
760 | if ( in_array( $block['blockName'], $allowed_wrapper_blocks, true ) ) { |
761 | $output .= _excerpt_render_inner_blocks( $block, $allowed_blocks ); |
762 | continue; |