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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 |
|---|---|
| 632 | } |
| 633 | |
| 634 | /** |
| 635 | * Filters all options after retrieving them. |
| 636 | * |
| 637 | * @since 4.9.0 |
| 638 | * |
| 639 | * @param array $alloptions Array with all options. |
| 640 | */ |
| 641 | return apply_filters( 'alloptions', $alloptions ); |
| 642 | } |
| 643 | |
| 644 | /** |
| 645 | * Loads and primes caches of certain often requested network options if is_multisite(). |
| 646 | * |
| 647 | * @since 3.0.0 |
| 648 | * @since 6.3.0 Also prime caches for network options when persistent object cache is enabled. |
| 649 | * |
| 650 | * @global wpdb $wpdb WordPress database abstraction object. |