php - Create 2 dimensional merged array based value -

i have array in following format,

array (     [0] => array         (             [expense_id] => 7             [type] => frfrf             [mode] => rfr             [amount] => 100             [tran_type] => expense             [date] => 2015-06-29         )      [1] => array         (             [expense_id] => 8             [type] => frfrf             [mode] => rfr             [amount] => 100             [tran_type] => expense             [date] => 2015-06-29         )      [2] => array         (             [expense_id] => 9             [type] => frfrf             [mode] => rfr             [amount] => 444             [tran_type] => expense             [date] => 2015-06-29         )      [3] => array         (             [expense_id] => 10             [type] => frfrf             [mode] => rfr             [amount] => 1000             [tran_type] => income             [date] => 2015-06-29         )      [4] => array         (             [expense_id] => 5             [type] => frfrf             [mode] => rfr             [amount] => 100             [tran_type] => expense             [date] => 2015-06-01         )  ) 

i want merge array based on date value , store array key date

array (     [2015-06-29] => array         (             [0] => array                 (                     [expense_id] => 7                     [type] => frfrf                     [mode] => rfr                     [amount] => 100                     [tran_type] => expense                     [date] => 2015-06-29                 )              [1] => array                 (                     [expense_id] => 8                     [type] => frfrf                     [mode] => rfr                     [amount] => 100                     [tran_type] => expense                     [date] => 2015-06-29                 )              [2] => array                 (                     [expense_id] => 9                     [type] => frfrf                     [mode] => rfr                     [amount] => 444                     [tran_type] => expense                     [date] => 2015-06-29                 )              [3] => array                 (                     [expense_id] => 10                     [type] => frfrf                     [mode] => rfr                     [amount] => 1000                     [tran_type] => income                     [date] => 2015-06-29                 )          )      [2015-06-01] => array         (             [0] => array                 (                     [expense_id] => 5                     [type] => frfrf                     [mode] => rfr                     [amount] => 100                     [tran_type] => expense                     [date] => 2015-06-01                 )          )  ) 

currently i'm doing using foreach loop , there simple way this

foreach ($d $v) {     $d1[$v['date']][] = $v; } 

data retrieved using mysql, mysql query acceptable

i know way

$newarray = [];  foreach ($array $subarray) {     $newarray[$subarray['date']][] = $subarray; }