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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 |
---|---|
490 | * Filter a blog option value. |
491 | * |
492 | * The dynamic portion of the hook name, `$option`, refers to the blog option name. |
493 | * |
494 | * @since 3.5.0 |
495 | * |
496 | * @param string $value The option value. |
497 | * @param int $id Blog ID. |
498 | */ |
499 | return apply_filters( "blog_option_{$option}", $value, $id ); |
500 | } |
501 |
|
502 | /** |
503 | * Add a new option for a given blog id. |
504 | * |
505 | * You do not need to serialize values. If the value needs to be serialized, then |
506 | * it will be serialized before it is inserted into the database. Remember, |
507 | * resources can not be serialized or added as an option. |
508 | * |