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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 |
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425 | /** |
426 | * Fires after the value of an option has been successfully updated. |
427 | * |
428 | * @since 2.9.0 |
429 | * |
430 | * @param string $option Name of the updated option. |
431 | * @param mixed $old_value The old option value. |
432 | * @param mixed $value The new option value. |
433 | */ |
434 | do_action( 'updated_option', $option, $old_value, $value ); |
435 | return true; |
436 | } |
437 |
|
438 | /** |
439 | * Adds a new option. |
440 | * |
441 | * You do not need to serialize values. If the value needs to be serialized, |
442 | * then it will be serialized before it is inserted into the database. |
443 | * Remember, resources cannot be serialized or added as an option. |