wp-rest-api-route-contains.php

<?php

// Check if API request route contains a given segment
function route_contains($segment, $request) {
	
	// Check if segment to check is array
	if( ! is_array($segment) ) {
		
		// If not create an array
		$segment = array($segment);
		
	}
	
	// Get route from request-object
	$route = $request->get_route();
	
	// Remove any leading/trailing slashes
	$route = trim($route, '/');
	
	// Split route into segments
	$route_segments = explode('/', $route);
	
	// Check if segments is in route segments
	$intersect =  array_intersect($segment, $route_segments);
	
	return ! empty($intersect);
	
}