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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 |
|---|---|
| 575 | * Filters the content of a single block. |
| 576 | * |
| 577 | * @since 5.0.0 |
| 578 | * @since 5.9.0 The `$instance` parameter was added. |
| 579 | * |
| 580 | * @param string $block_content The block content. |
| 581 | * @param array $block The full block, including name and attributes. |
| 582 | * @param WP_Block $instance The block instance. |
| 583 | */ |
| 584 | $block_content = apply_filters( 'render_block', $block_content, $this->parsed_block, $this ); |
| 585 | |
| 586 | /** |
| 587 | * Filters the content of a single block. |
| 588 | * |
| 589 | * The dynamic portion of the hook name, `$name`, refers to |
| 590 | * the block name, e.g. "core/paragraph". |
| 591 | * |
| 592 | * @since 5.7.0 |
| 593 | * @since 5.9.0 The `$instance` parameter was added. |