数组合并有关问题（已更新）

数组合并问题（已更新）

本帖最后由 lazygc520 于 2014-04-08 16:17:15 编辑

array (
  0 => 
  array (
    'cust_no' => '237109S92B',
    'hi_no' => 'MEC38-431',
    'arr_time' => '30/03/2014  9:00',
    'totals' => 15,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 1,
    'c_type' => 'D22',
  ),
  1 => 
  array (
    'cust_no' => '237109S92B',
    'hi_no' => 'MEC38-431',
    'arr_time' => '30/03/2014  9:00',
    'totals' => 15,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 1,
    'c_type' => 'D22',
  ),
  2 => 
  array (
    'cust_no' => '237033AW0A',
    'hi_no' => 'BEM330-500',
    'arr_time' => '30/03/2014 19:00',
    'totals' => 15,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 1,
    'c_type' => 'X11M',
  ),
  3 => 
  array (
    'cust_no' => '237033AW0A',
    'hi_no' => 'BEM330-500',
    'arr_time' => '30/03/2014 19:00',
    'totals' => 45,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 3,
    'c_type' => 'X11M',
  ),
  4 => 
  array (
    'cust_no' => '237033AW0A',
    'hi_no' => 'BEM330-500',
    'arr_time' => '30/03/2014 19:00',
    'totals' => 45,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 3,
    'c_type' => 'X11M',
  ),
 5 => 
  array (
    'cust_no' => '237033AW0A',
    'hi_no' => 'BEM330-500',
    'arr_time' => '1/04/2014 19:00',
    'totals' => 45,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 3,
    'c_type' => 'X11M',
  ),
)

条件：当arr_time和c_type,snp都相同时，把条件相同的数组合并为新的二维数组，并设定日期形式yyyy-mm-dd_$i为其序号。变成例如

array (
  0 => 
  array (
    'no'=> '2014-04-08_1',
    'cust_no' => '237109S92B',
    'hi_no' => 'MEC38-431',
    'arr_time' => '30/03/2014  9:00',
    'totals' => 15,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 1,
    'c_type' => 'D22',
  ),
  1 => 
  array (
    'no'=> '2014-04-08_1',
    'cust_no' => '237109S92B',
    'hi_no' => 'MEC38-431',
    'arr_time' => '30/03/2014  9:00',
    'totals' => 15,
    'ch_date' => '26/03/2014  0:00',
    'snp' => 15,
    'mount' => 1,
    'c_type' => 'D22',
  ),
)

请问怎么求解？
------解决方案--------------------

$res = array();
foreach($ar as $t) {
  $k = join('_', array($t['arr_time'], $t['c_type'], $t['snp']));
  $res[$k][] = $t;
}
print_r($res);

得

Array
(
    [30/03/2014  9:00_D22_15] => Array
        (
            [0] => Array

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