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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 |
|---|---|
| 279 | /** |
| 280 | * Fires for a given custom post action request. |
| 281 | * |
| 282 | * The dynamic portion of the hook name, `$action`, refers to the custom post action. |
| 283 | * |
| 284 | * @since 4.6.0 |
| 285 | * |
| 286 | * @param int $post_id Post ID sent with the request. |
| 287 | */ |
| 288 | do_action( "post_action_{$action}", $post_id ); |
| 289 | |
| 290 | wp_redirect( admin_url('edit.php') ); |
| 291 | exit(); |
| 292 | } // end switch |
| 293 | include( ABSPATH . 'wp-admin/admin-footer.php' ); |
| 294 | |