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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 |
|---|---|
| 1252 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 1253 | * |
| 1254 | * @since 2.9.0 As "update_site_option_{$key}" |
| 1255 | * @since 3.0.0 |
| 1256 | * |
| 1257 | * @param string $option Name of site option. |
| 1258 | * @param mixed $value Current value of site option. |
| 1259 | * @param mixed $old_value Old value of site option. |
| 1260 | */ |
| 1261 | do_action( "update_site_option_{$option}", $option, $value, $old_value ); |
| 1262 | |
| 1263 | /** |
| 1264 | * Fires after the value of a site option has been successfully updated. |
| 1265 | * |
| 1266 | * @since 3.0.0 |
| 1267 | * |
| 1268 | * @param string $option Name of site option. |
| 1269 | * @param mixed $value Current value of site option. |
| 1270 | * @param mixed $old_value Old value of site option. |