Online PHP editor | refs for cetL8

<?php $array = [ 2 => (object)['title' => 'Section', 'linked' => 1], 1 => (object)['title' => 'Sub-Section', 'linked' => 1], 0 => (object)['title' => 'Sub-Sub-Section', 'linked' => null] ]; array_unshift($array); var_export($array); array_unshift($array, null); var_export($array); unset($array[0]); var_export($array);