php - Split an array in sub arrays of consecutive dates -

for rent application, have array $dates this:

array (     [2013-07-19] => 1     [2013-07-21] => 3     [2013-07-23] => 2     [2013-07-24] => 4     [2013-07-25] => 4     [2013-07-26] => 2     [2013-07-27] => 2     [2013-07-30] => 3     [2013-07-31] => 1 ) 

the date key, , values number of items rent in day specific product

how can split array in many sub arrays containing each list of consecutive days? this:

array (      [0] => array         (             [2013-07-19] => 1         )      [1] => array         (             [2013-07-21] => 3         )      [2] => array         (             [2013-07-23] => 2             [2013-07-24] => 4             [2013-07-25] => 4             [2013-07-26] => 2             [2013-07-27] => 2         )      [3] => array         (             [2013-07-30] => 3             [2013-07-31] => 1         )  ) 

you can this:

$data = array(   '2013-07-19' => 1,   '2013-07-21' => 3,   '2013-07-23' => 2,   '2013-07-24' => 4,   '2013-07-25' => 4,   '2013-07-26' => 2,   '2013-07-27' => 2,   '2013-07-30' => 3,   '2013-07-31' => 1 );  $result = array(); $ref = new datetime('1821-11-11'); foreach ($data $datum => $nb) {     if ($ref->add(new dateinterval('p1d'))->format('y-m-d')!=$datum) {         $result[] = array();          $ref = new datetime($datum);     }     $result[array_pop(array_keys($result))][$datum] = $nb; } print_r($result);