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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 |
---|---|
985 | * Filter the value of an existing site option. |
986 | * |
987 | * The dynamic portion of the hook name, $option, refers to the option name. |
988 | * |
989 | * @since 2.9.0 As 'site_option_' . $key |
990 | * @since 3.0.0 |
991 | * |
992 | * @param mixed $value Value of site option. |
993 | */ |
994 | return apply_filters( 'site_option_' . $option, $value ); |
995 | } |
996 |
|
997 | /** |
998 | * Add a new site option. |
999 | * |
1000 | * Existing options will not be updated. Note that prior to 3.3 this wasn't the case. |
1001 | * |
1002 | * @since 2.8.0 |
1003 | * |