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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 |
|---|---|
| 328 | * Fires after the value of a specific option has been successfully updated. |
| 329 | * |
| 330 | * The dynamic portion of the hook name, `$option`, refers to the option name. |
| 331 | * |
| 332 | * @since 2.0.1 |
| 333 | * |
| 334 | * @param mixed $old_value The old option value. |
| 335 | * @param mixed $value The new option value. |
| 336 | */ |
| 337 | do_action( "update_option_{$option}", $old_value, $value ); |
| 338 | |
| 339 | /** |
| 340 | * Fires after the value of an option has been successfully updated. |
| 341 | * |
| 342 | * @since 2.9.0 |
| 343 | * |
| 344 | * @param string $option Name of the updated option. |
| 345 | * @param mixed $old_value The old option value. |
| 346 | * @param mixed $value The new option value. |