<?php spl_autoload_register(function($class) { var_dump('Autoload: '.$class); return false;}); var_dump(is_a(1, 'Foo')); var_dump(is_a(2, 'Foo', false)); var_dump(is_a(3, 'Foo', true)); var_dump(is_a('a', 'Foo')); var_dump(is_a('b', 'Foo', false)); var_dump(is_a('c', 'Foo', true));
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