将已知数组按条件分为若个新数组

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',  ),)

  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',  ),...）

$ar = array (  0 =>   array (    'po_num' => 'DYNP-770266110-00',    'plant' => 'DYNP',    'get_date' => '2013-09-09',    'cust_no' => '12654172',    'total' => '615',    'snp' => '15',    'mount' => '41',    'lp_no' => 'P000000D',  ),  1 =>   array (    'po_num' => 'DYNP-770266110-00',    'plant' => 'DYNP',    'get_date' => '2013-09-09',    'cust_no' => '12647212',    'total' => '60',    'snp' => '15',    'mount' => '4',    'lp_no' => 'P000000D',  ),);$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            [plant] => DYNP            [get_date] => 2013-09-09            [cust_no] => 12654172            [total] => 100            [snp] => 15            [mount] => 41            [lp_no] => P000000D        )    [2] => Array        (            [po_nume] => 3/7            [po_num] => DYNP-770266110-00            [plant] => DYNP            [get_date] => 2013-09-09            [cust_no] => 12654172            [total] => 100            [snp] => 15            [mount] => 41            [lp_no] => P000000D        )    [3] => Array        (            [po_nume] => 4/7            [po_num] => DYNP-770266110-00            [plant] => DYNP            [get_date] => 2013-09-09            [cust_no] => 12654172            [total] => 100            [snp] => 15            [mount] => 41            [lp_no] => P000000D        )    [4] => Array        (            [po_nume] => 5/7            [po_num] => DYNP-770266110-00            [plant] => DYNP            [get_date] => 2013-09-09            [cust_no] => 12654172            [total] => 100            [snp] => 15            [mount] => 41            [lp_no] => P000000D        )    [5] => Array        (            [po_nume] => 6/7            [po_num] => DYNP-770266110-00            [plant] => DYNP            [get_date] => 2013-09-09            [cust_no] => 12654172            [total] => 100            [snp] => 15            [mount] => 41            [lp_no] => P000000D        )    [6] => Array        (            [po_nume] => 7/7            [po_num] => DYNP-770266110-00            [plant] => DYNP            [get_date] => 2013-09-09            [cust_no] => 12654172            [total] => 15            [snp] => 15            [mount] => 41            [lp_no] => P000000D        )    [7] => 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        ))