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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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359 | /** |
360 | * Fires after the value of an option has been successfully updated. |
361 | * |
362 | * @since 2.9.0 |
363 | * |
364 | * @param string $option Name of the updated option. |
365 | * @param mixed $old_value The old option value. |
366 | * @param mixed $value The new option value. |
367 | */ |
368 | do_action( 'updated_option', $option, $old_value, $value ); |
369 | return true; |
370 | } |
371 |
|
372 | /** |
373 | * Add a new option. |
374 | * |
375 | * You do not need to serialize values. If the value needs to be serialized, then |
376 | * it will be serialized before it is inserted into the database. Remember, |
377 | * resources can not be serialized or added as an option. |