Online PHP editor | refs for gVpPk

<?php $dom = [ [ 'style' => [ 'text-align' => '', ] ], [ 'style' => [ ] ] ]; $key = 0; if (isset($dom[$key]['style']['text-align'])) { $align = strtoupper($dom[$key]['style']['text-align'][0]); var_dump('should be called but raise an error'); } if (isset($dom[$key]['style']['text-align'][0])) { var_dump('should not be called'); } $key = 1; if (isset($dom[$key]['style']['text-align'][0])) { var_dump('should not be called because text-align key is not defined'); }