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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 |
|---|---|
| 1168 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1169 | * |
| 1170 | * @since 2.9.0 As 'site_option_' . $key |
| 1171 | * @since 3.0.0 |
| 1172 | * @since 4.4.0 The `$option` parameter was added |
| 1173 | * |
| 1174 | * @param mixed $value Value of network option. |
| 1175 | * @param string $option Option name. |
| 1176 | */ |
| 1177 | return apply_filters( 'site_option_' . $option, $value, $option ); |
| 1178 | } |
| 1179 | |
| 1180 | /** |
| 1181 | * Add a new network option. |
| 1182 | * |
| 1183 | * Existing options will not be updated. |
| 1184 | * |
| 1185 | * @since 4.4.0 |
| 1186 | * |