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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 |
|---|---|
| 303 | $post_id = 0; |
| 304 | } |
| 305 | |
| 306 | if ( $post_id ) { |
| 307 | $post = get_post( $post_id ); |
| 308 | if ( $post ) { |
| 309 | $post_type = $post->post_type; |
| 310 | |
| 311 | /** This filter is documented in wp-admin/post.php */ |
| 312 | $replace_editor = apply_filters( 'replace_editor', false, $post ); |
| 313 | |
| 314 | if ( ! $replace_editor ) { |
| 315 | $is_block_editor = use_block_editor_for_post( $post ); |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | break; |
| 320 | case 'edit-tags': |
| 321 | case 'term': |