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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 |
|---|---|
| 571 | * Filters the REST Server Class. |
| 572 | * |
| 573 | * This filter allows you to adjust the server class used by the REST API, using a |
| 574 | * different class to handle requests. |
| 575 | * |
| 576 | * @since 4.4.0 |
| 577 | * |
| 578 | * @param string $class_name The name of the server class. Default 'WP_REST_Server'. |
| 579 | */ |
| 580 | $wp_rest_server_class = apply_filters( 'wp_rest_server_class', 'WP_REST_Server' ); |
| 581 | $wp_rest_server = new $wp_rest_server_class(); |
| 582 | |
| 583 | /** |
| 584 | * Fires when preparing to serve a REST API request. |
| 585 | * |
| 586 | * Endpoint objects should be created and register their hooks on this action rather |
| 587 | * than another action to ensure they're only loaded when needed. |
| 588 | * |
| 589 | * @since 4.4.0 |