Online PHP editor | refs for YCrEp

<?php namespace Foo { class App { const SOME_CONST = 5; public function __construct($a) { echo __METHOD__ . " $a\n"; } } } namespace Foo\Api { class Api { private $var = 2; public function __construct($a) { echo __METHOD__ . " " . get_class($a) . "\n"; } public function run() { echo __METHOD__; } } } namespace Whatever { use Foo\Api\Api; use Foo\App as Foo; // require __DIR__ . '/path/to/vendor/autoload.php'; var_dump( Api::class, // "Foo\Api\Api" class_exists(Api::class), // bool(true) Foo::class, // "Foo\App" class_exists(Foo::class) // bool(true) ); $api = new Api( new Foo(Foo::SOME_CONST) // Fatal Error: Class "Foo\Api\Foo" not found ... ); $api->run(); }