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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 |
|---|---|
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * Filters all options after retrieving them. |
| 339 | * |
| 340 | * @since 4.9.0 |
| 341 | * |
| 342 | * @param array $alloptions Array with all options. |
| 343 | */ |
| 344 | return apply_filters( 'alloptions', $alloptions ); |
| 345 | } |
| 346 | |
| 347 | /** |
| 348 | * Loads and caches certain often requested site options if is_multisite() and a persistent cache is not being used. |
| 349 | * |
| 350 | * @since 3.0.0 |
| 351 | * |
| 352 | * @global wpdb $wpdb WordPress database abstraction object. |
| 353 | * |