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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 |
|---|---|
| 1022 | * Filter the value of an existing site option. |
| 1023 | * |
| 1024 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1025 | * |
| 1026 | * @since 2.9.0 As 'site_option_' . $key |
| 1027 | * @since 3.0.0 |
| 1028 | * |
| 1029 | * @param mixed $value Value of site option. |
| 1030 | */ |
| 1031 | return apply_filters( 'site_option_' . $option, $value ); |
| 1032 | } |
| 1033 | |
| 1034 | /** |
| 1035 | * Add a new site option. |
| 1036 | * |
| 1037 | * Existing options will not be updated. Note that prior to 3.3 this wasn't the case. |
| 1038 | * |
| 1039 | * @since 2.8.0 |
| 1040 | * |