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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 |
|---|---|
| 998 | * Filter the value of an existing site option. |
| 999 | * |
| 1000 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1001 | * |
| 1002 | * @since 2.9.0 As 'site_option_' . $key |
| 1003 | * @since 3.0.0 |
| 1004 | * |
| 1005 | * @param mixed $value Value of site option. |
| 1006 | */ |
| 1007 | return apply_filters( 'site_option_' . $option, $value ); |
| 1008 | } |
| 1009 | |
| 1010 | /** |
| 1011 | * Add a new site option. |
| 1012 | * |
| 1013 | * Existing options will not be updated. Note that prior to 3.3 this wasn't the case. |
| 1014 | * |
| 1015 | * @since 2.8.0 |
| 1016 | * |