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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 |
|---|---|
| 1845 | * @since 2.9.0 As 'site_option_' . $key |
| 1846 | * @since 3.0.0 |
| 1847 | * @since 4.4.0 The `$option` parameter was added. |
| 1848 | * @since 4.7.0 The `$network_id` parameter was added. |
| 1849 | * |
| 1850 | * @param mixed $value Value of network option. |
| 1851 | * @param string $option Option name. |
| 1852 | * @param int $network_id ID of the network. |
| 1853 | */ |
| 1854 | return apply_filters( "site_option_{$option}", $value, $option, $network_id ); |
| 1855 | } |
| 1856 | |
| 1857 | /** |
| 1858 | * Adds a new network option. |
| 1859 | * |
| 1860 | * Existing options will not be updated. |
| 1861 | * |
| 1862 | * @since 4.4.0 |
| 1863 | * |