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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 |
|---|---|
| 418 | /** |
| 419 | * Fires inside the auxiliary 'Actions' column of the Sites list table. |
| 420 | * |
| 421 | * By default this column is hidden unless something is hooked to the action. |
| 422 | * |
| 423 | * @since MU (3.0.0) |
| 424 | * |
| 425 | * @param int $blog_id The site ID. |
| 426 | */ |
| 427 | do_action( 'wpmublogsaction', $blog['blog_id'] ); |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | /** |
| 432 | * Handles output for the default column. |
| 433 | * |
| 434 | * @since 4.3.0 |
| 435 | * |
| 436 | * @param array $blog Current site. |