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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 |
|---|---|
| 496 | * Fires when preparing to serve an API request. |
| 497 | * |
| 498 | * Endpoint objects should be created and register their hooks on this action rather |
| 499 | * than another action to ensure they're only loaded when needed. |
| 500 | * |
| 501 | * @since 4.4.0 |
| 502 | * |
| 503 | * @param WP_REST_Server $wp_rest_server Server object. |
| 504 | */ |
| 505 | do_action( 'rest_api_init', $wp_rest_server ); |
| 506 | } |
| 507 | |
| 508 | return $wp_rest_server; |
| 509 | } |
| 510 | |
| 511 | /** |
| 512 | * Ensures request arguments are a request object (for consistency). |
| 513 | * |
| 514 | * @since 4.4.0 |