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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 |
|---|---|
| 1527 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1528 | * |
| 1529 | * @since 2.9.0 As "delete_site_option_{$key}" |
| 1530 | * @since 3.0.0 |
| 1531 | * @since 4.7.0 The `$network_id` parameter was added. |
| 1532 | * |
| 1533 | * @param string $option Name of the network option. |
| 1534 | * @param int $network_id ID of the network. |
| 1535 | */ |
| 1536 | do_action( "delete_site_option_{$option}", $option, $network_id ); |
| 1537 | |
| 1538 | /** |
| 1539 | * Fires after a network option has been deleted. |
| 1540 | * |
| 1541 | * @since 3.0.0 |
| 1542 | * @since 4.7.0 The `$network_id` parameter was added. |
| 1543 | * |
| 1544 | * @param string $option Name of the network option. |
| 1545 | * @param int $network_id ID of the network. |