note 130391 added to function.array-column

array_column is the only function out of array_values, array_merge, array_slice and array_column that does de-reference values. Also, it works recursive! <?php $values = []; $values['a'] = []; $values['a']['b'] = 'foo'; $references = []; $references['a'] = &$values['a']; $copyColumn = array_combine(array_keys($references), array_column($references, null)); $values['a']['b'] = 'baz'; echo $copyColumn['a']['b'] . PHP_EOL; // foo echo $references['a']['b'] . PHP_EOL; // baz ?> If you want to preserve the keys you can use <?php $dereferenced = array_combine(array_keys($references), array_column($references, null)) ?> ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.5.137 (proxied: 84.131.204.191) ---- Manual Page -- https://php.net/manual/en/function.array-column.php Edit -- https://main.php.net/note/edit/130391 Del: integrated -- https://main.php.net/note/delete/130391/integrated Del: useless -- https://main.php.net/note/delete/130391/useless Del: bad code -- https://main.php.net/note/delete/130391/bad+code Del: spam -- https://main.php.net/note/delete/130391/spam Del: non-english -- https://main.php.net/note/delete/130391/non-english Del: in docs -- https://main.php.net/note/delete/130391/in+docs Del: other reasons-- https://main.php.net/note/delete/130391 Reject -- https://main.php.net/note/reject/130391 Search -- https://main.php.net/manage/user-notes.php