Online PHP editor | refs for i6svS

<?php $nullvar = null; $nullstr = ''; $notnull = 'foo'; $unset = 'something'; unset($unset); function quiet_dump($v) { ob_start(); echo '<pre>'; var_dump($v); echo '</pre>'; return ob_get_clean(); } $results = array( '<h1>Results</h1>' , '<br/>$nullvar = ' , quiet_dump(isset($nullvar), true) , '<br/> $nullstr = ' , quiet_dump(isset($nullstr), true) , '<br/>$notnull = ' , quiet_dump(isset($notnull), true) , '<br/>$unset = ' , quiet_dump(isset($unset), true) ); echo implode(' ',$results);