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@ 2018-01-16T14:50:42Z

<?php
declare(strict_types=1);

class Foo {
    
    public function getTest($bar = null):? int {
        if($bar === 'test'){
            return 1;
        }
    }
}

$test = new Foo();

var_dump($test->getTest());
var_dump($test->getTest('test'));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

18.21 ms | 474 KiB | 4 Q