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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 |
|---|---|
| 121 | /** |
| 122 | * Filters the fields displayed in the post revision diff UI. |
| 123 | * |
| 124 | * @since 4.1.0 |
| 125 | * |
| 126 | * @param array $return Revision UI fields. Each item is an array of id, name and diff. |
| 127 | * @param WP_Post $compare_from The revision post to compare from. |
| 128 | * @param WP_Post $compare_to The revision post to compare to. |
| 129 | */ |
| 130 | return apply_filters( 'wp_get_revision_ui_diff', $return, $compare_from, $compare_to ); |
| 131 | |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Prepare revisions for JavaScript. |
| 136 | * |
| 137 | * @since 3.6.0 |
| 138 | * |
| 139 | * @param object|int $post The post object. Also accepts a post ID. |