Starting January 22nd, 2018 http-interop is officially deprecated in favor of PSR-15.

From v1.1, this package directly extends PSR-15 interfaces to provide backwards compatibility and should no longer be added to new projects.

Please switch to psr/http-server-middleware as soon as possible.

There are two changes required to use the official psr/http-server-middleware package:

Replace the line in composer.json that reads:

{ "require": { "http-interop/http-server-middleware": "^1.0" } }

with:

{ "require": { "psr/http-server-middleware": "^1.0" } }

Replace any references to:

use Interop\Http\Server\MiddlewareInterface;

with:

use Psr\Http\Server\MiddlewareInterface;`