将已知数组按条件分成若个新数组

将已知数组按条件分为若个新数组
已知数组：

array (

  0 => 

  array (

    'po_num' => 'DYNP-770266110-00',

    'plant' => 'DYNP',

    'get_date' => '2013-09-09',

    'cust_no' => '12654172',

    'total' => '615',

    'snp' => '15',

    'mount' => '41',

    'lp_no' => 'P000000D',

  ),

  1 => 

  array (

    'po_num' => 'DYNP-770266110-00',

    'plant' => 'DYNP',

    'get_date' => '2013-09-09',

    'cust_no' => '12647212',

    'total' => '60',

    'snp' => '15',

    'mount' => '4',

    'lp_no' => 'P000000D',

  ),

)

能否按字段total为100为单位把数组再分为若干个新的数组？并加上序号字段在其中，比如：

  array (

    'po_num' => '1/7',//新增字段信息

    'po_num' => 'DYNP-770266110-00',

    'plant' => 'DYNP',

    'get_date' => '2013-09-09',

    'cust_no' => '12654172',

    'total' => '615',

    'snp' => '15',

    'mount' => '41',

    'lp_no' => 'P000000D',

  ),

...

）

分享到：

------解决方案--------------------
又来了？

$ar = array (

  0 => 

  array (

    'po_num' => 'DYNP-770266110-00',

    'plant' => 'DYNP',

    'get_date' => '2013-09-09',

    'cust_no' => '12654172',

    'total' => '615',

    'snp' => '15',

    'mount' => '41',

    'lp_no' => 'P000000D',

  ),

  1 => 

  array (

    'po_num' => 'DYNP-770266110-00',

    'plant' => 'DYNP',

    'get_date' => '2013-09-09',

    'cust_no' => '12647212',

    'total' => '60',

    'snp' => '15',

    'mount' => '4',

    'lp_no' => 'P000000D',

  ),

);

$split_num = 100;

foreach($ar as $item) {

  if($item['total'] <= $split_num) {

    $res[] = $item;

    continue;

  }

  $total = $item['total'];

  $n = ceil($total/$split_num);

  for($i=1; $i<$n; $i++) {

    $res[] = array_merge(array('po_nume' => "$i/$n"), $item, array('total' => $split_num));

  }

  $res[] = array_merge(array('po_nume' => "$i/$n"), $item, array('total' => $total%$split_num));

}

print_r($res);

Array

(

    [0] => Array

        (

            [po_nume] => 1/7

            [po_num] => DYNP-770266110-00

            [plant] => DYNP

            [get_date] => 2013-09-09

            [cust_no] => 12654172

            [total] => 100

            [snp] => 15

            [mount] => 41

            [lp_no] => P000000D

        )



    [1] => Array

        (

            [po_nume] => 2/7

            [po_num] => DYNP-770266110-00