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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 |
|---|---|
| 428 | /** |
| 429 | * Fires inside the auxiliary 'Actions' column of the Sites list table. |
| 430 | * |
| 431 | * By default this column is hidden unless something is hooked to the action. |
| 432 | * |
| 433 | * @since MU |
| 434 | * |
| 435 | * @param int $blog_id The site ID. |
| 436 | */ |
| 437 | do_action( 'wpmublogsaction', $blog['blog_id'] ); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * Handles output for the default column. |
| 443 | * |
| 444 | * @since 4.3.0 |
| 445 | * @access public |
| 446 | * |