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<?php function foo(): callable { return function() {}; } function bar(): callable { return 'strpos'; } function baz(): callable { return 'baz'; } function qux(): callable { return array(new SplFixedArray(), 'fromArray'); } function quux(): callable { return array('SplFixedArray', 'fromArray'); } function corge(): callable { return 'SplFixedArray::fromArray'; } foo(); bar(); baz(); qux(); quux(); corge();
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