Online PHP editor | refs for DgJFP

<?php $mock = [ 'foo' => null ]; foreach ($mock as &$item) { $item = 'foo'; } unset($item); $mockCopy = $mock; var_dump("after assignment", $mock, $mockCopy); $mockCopy['foo_copy'] = $mock['foo']; var_dump("after foo_copy", $mock, $mockCopy); $mockCopy['foo'] = 'bar'; var_dump("after foo=bar", $mock, $mockCopy); var_dump($mock['foo']);