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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 |
|---|---|
| 539 | * Filters the REST Server Class. |
| 540 | * |
| 541 | * This filter allows you to adjust the server class used by the REST API, using a |
| 542 | * different class to handle requests. |
| 543 | * |
| 544 | * @since 4.4.0 |
| 545 | * |
| 546 | * @param string $class_name The name of the server class. Default 'WP_REST_Server'. |
| 547 | */ |
| 548 | $wp_rest_server_class = apply_filters( 'wp_rest_server_class', 'WP_REST_Server' ); |
| 549 | $wp_rest_server = new $wp_rest_server_class; |
| 550 | |
| 551 | /** |
| 552 | * Fires when preparing to serve a REST API request. |
| 553 | * |
| 554 | * Endpoint objects should be created and register their hooks on this action rather |
| 555 | * than another action to ensure they're only loaded when needed. |
| 556 | * |
| 557 | * @since 4.4.0 |