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<?php function array_filter_(array $data, callable $callback) { $filtered = []; foreach ($data as $key => $value) { if ($callback($value)) { $filtered[$key] = $value; } } return $filtered; } $data = ['foo', 'bar']; var_dump($data); $filtered = array_filter_($data, function (&$value) { $value = (bool) $value; return true; }); var_dump($filtered);
Output for 5.6.38, 7.0.0 - 7.0.32, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(2) { [0]=> string(3) "foo" [1]=> string(3) "bar" } array(2) { [0]=> bool(true) [1]=> bool(true) }
preferences:
193.33 ms | 404 KiB | 245 Q