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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 |
|---|---|
| 672 | * Filters a blog option value. |
| 673 | * |
| 674 | * The dynamic portion of the hook name, `$option`, refers to the blog option name. |
| 675 | * |
| 676 | * @since 3.5.0 |
| 677 | * |
| 678 | * @param string $value The option value. |
| 679 | * @param int $id Blog ID. |
| 680 | */ |
| 681 | return apply_filters( "blog_option_{$option}", $value, $id ); |
| 682 | } |
| 683 | |
| 684 | /** |
| 685 | * Add a new option for a given blog id. |
| 686 | * |
| 687 | * You do not need to serialize values. If the value needs to be serialized, then |
| 688 | * it will be serialized before it is inserted into the database. Remember, |
| 689 | * resources can not be serialized or added as an option. |
| 690 | * |