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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 |
|---|---|
| 1538 | /** |
| 1539 | * Fires after a network option has been deleted. |
| 1540 | * |
| 1541 | * @since 3.0.0 |
| 1542 | * @since 4.7.0 The `$network_id` parameter was added. |
| 1543 | * |
| 1544 | * @param string $option Name of the network option. |
| 1545 | * @param int $network_id ID of the network. |
| 1546 | */ |
| 1547 | do_action( 'delete_site_option', $option, $network_id ); |
| 1548 | |
| 1549 | return true; |
| 1550 | } |
| 1551 | |
| 1552 | return false; |
| 1553 | } |
| 1554 | |
| 1555 | /** |
| 1556 | * Updates the value of a network option that was already added. |