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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 |
|---|---|
| 457 | * Filter a blog option value. |
| 458 | * |
| 459 | * The dynamic portion of the hook name, $option, refers to the blog option name. |
| 460 | * |
| 461 | * @since 3.5.0 |
| 462 | * |
| 463 | * @param string $value The option value. |
| 464 | * @param int $id Blog ID. |
| 465 | */ |
| 466 | return apply_filters( "blog_option_{$option}", $value, $id ); |
| 467 | } |
| 468 | |
| 469 | /** |
| 470 | * Add a new option for a given blog id. |
| 471 | * |
| 472 | * You do not need to serialize values. If the value needs to be serialized, then |
| 473 | * it will be serialized before it is inserted into the database. Remember, |
| 474 | * resources can not be serialized or added as an option. |
| 475 | * |