The Method Overriding Middleware enables you to use the X-Http-Method-Override request header or the request body parameter _METHOD to override an incoming request’s method.
The middleware should be placed after the routing middleware has been added.
<?php
use Slim\Factory\AppFactory;
use Slim\Middleware\MethodOverrideMiddleware;
require __DIR__ . '/../vendor/autoload.php';
$app = AppFactory::create();
// Add RoutingMiddleware before we add the MethodOverrideMiddleware so the method is overridden before routing is done
$app->addRoutingMiddleware();
// Add MethodOverride middleware
$methodOverrideMiddleware = new MethodOverrideMiddleware();
$app->add($methodOverrideMiddleware);
// ...
$app->run();