<?php

// Valid: File which only declares functions, both global and namespaced.

namespace {
    function fooA() {}
    function fooB() {}
    function fooC() {}
}

namespace First {
    function firstFooA() {}
    function firstFooB() {}
}

namespace Second {
    function secondFooA() {}

    if ($a === $b) {
        function secondFooB() {}
    }
}

namespace {
    // This sniff has no rules about side-effects.
    $globVar = new class() {
        public function thisIsAnAnonymousClass() {}
    };

    $closure = function($a, $b) {
        return $a + $b;
    };

    $arrow = fn($a, $b) => $a + $b;

    define('MY_CONSTANT', 'foo');

    const ANOTHER_CONSTANT = 'bar';

    while ( true ) {
        // Do something.
    }
}