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<?php declare(strict_types=1); $a = [0, 1, '0', null, '', new \stdClass]; var_dump(array_filter($a));
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(2) { [1]=> int(1) [5]=> object(stdClass)#1 (0) { } }
Output for 5.6.38
Warning: Unsupported declare 'strict_types' in /in/CjD8A on line 2 array(2) { [1]=> int(1) [5]=> object(stdClass)#1 (0) { } }

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200.29 ms | 401 KiB | 199 Q