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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 |
|---|---|
| 143 | /** |
| 144 | * Filters the fields displayed in the post revision diff UI. |
| 145 | * |
| 146 | * @since 4.1.0 |
| 147 | * |
| 148 | * @param array[] $return Array of revision UI fields. Each item is an array of id, name, and diff. |
| 149 | * @param WP_Post $compare_from The revision post to compare from. |
| 150 | * @param WP_Post $compare_to The revision post to compare to. |
| 151 | */ |
| 152 | return apply_filters( 'wp_get_revision_ui_diff', $return, $compare_from, $compare_to ); |
| 153 | |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Prepare revisions for JavaScript. |
| 158 | * |
| 159 | * @since 3.6.0 |
| 160 | * |
| 161 | * @param object|int $post The post object. Also accepts a post ID. |