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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 |
|---|---|
| 164 | |
| 165 | /** |
| 166 | * Allows replacement of the editor. |
| 167 | * |
| 168 | * @since 4.9.0 |
| 169 | * |
| 170 | * @param boolean Whether to replace the editor. Default false. |
| 171 | * @param object $post Post object. |
| 172 | */ |
| 173 | if ( apply_filters( 'replace_editor', false, $post ) === true ) { |
| 174 | break; |
| 175 | } |
| 176 | |
| 177 | if ( use_block_editor_for_post( $post ) ) { |
| 178 | include( ABSPATH . 'wp-admin/edit-form-blocks.php' ); |
| 179 | break; |
| 180 | } |
| 181 | |
| 182 | if ( ! wp_check_post_lock( $post->ID ) ) { |