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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 |
|---|---|
| 292 | $post_id = 0; |
| 293 | } |
| 294 | |
| 295 | if ( $post_id ) { |
| 296 | $post = get_post( $post_id ); |
| 297 | if ( $post ) { |
| 298 | $post_type = $post->post_type; |
| 299 | |
| 300 | /** This filter is documented in wp-admin/post.php */ |
| 301 | $replace_editor = apply_filters( 'replace_editor', false, $post ); |
| 302 | |
| 303 | if ( ! $replace_editor ) { |
| 304 | $is_block_editor = use_block_editor_for_post( $post ); |
| 305 | } |
| 306 | } |
| 307 | } |
| 308 | break; |
| 309 | case 'edit-tags': |
| 310 | case 'term': |