wp-includes/rest-api.php:1416Validate a request argument based on details registered to the route.
$valuemixed$requestWP_REST_Request$paramstringtrue|WP_Errorfunction rest_validate_request_arg( $value, $request, $param ) { $attributes = $request->get_attributes(); if ( ! isset( $attributes['args'][ $param ] ) || ! is_array( $attributes['args'][ $param ] ) ) { return true; } $args = $attributes['args'][ $param ]; return rest_validate_value_from_schema( $value, $args, $param );}Introduced in 4.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.