Online PHP editor | refs for jvGHi

<?php $matrix = array( '2014-06-07' => array( '2014-06-21' => 21.7, '2014-06-22' => 14.7, '2014-06-23' => 121.7, ), '2014-06-08' => array( '2014-06-21' => 7.7, '2014-06-22' => 14.7, '2014-06-23' => 17.7, ), '2014-06-09' => array( '2014-06-21' => 14.7, '2014-06-22' => 42.7, '2014-06-23' => 114.7, ), ); echo '<pre>'; print_r($matrix);