求一段php代码

Question

php合并算法

Answer 1

$data = array();
$data[] = array("id" => "123", "name" => "money", "before_save" => "10", "after_save" => "20", "create_date" => "2014-10-23");
$data[] = array("id" => "123", "name" => "money", "before_save" => "20", "after_save" => "30", "create_date" => "2014-10-24");
$data[] = array("id" => "123", "name" => "money", "before_save" => "30", "after_save" => "50", "create_date" => "2014-10-25");
$data[] = array("id" => "123", "name" => "duration", "before_save" => "10", "after_save" => "20", "create_date" => "2014-10-23");
$data[] = array("id" => "123", "name" => "duration", "before_save" => "20", "after_save" => "30", "create_date" => "2014-10-24");
$data[] = array("id" => "456", "name" => "money", "before_save" => "60", "after_save" => "70", "create_date" => "2014-10-26");
$data[] = array("id" => "456", "name" => "money", "before_save" => "70", "after_save" => "80", "create_date" => "2014-10-27");
$data[] = array("id" => "456", "name" => "money", "before_save" => "80", "after_save" => "100", "create_date" => "2014-10-28");
$data[] = array("id" => "456", "name" => "duration", "before_save" => "60", "after_save" => "70", "create_date" => "2014-10-26");
$data[] = array("id" => "456", "name" => "duration", "before_save" => "70", "after_save" => "80", "create_date" => "2014-10-27");
$data[] = array("id" => "456", "name" => "duration", "before_save" => "80", "after_save" => "100", "create_date" => "2014-10-28");$res = array();
foreach($data as  $t) $res[$t['id']][$t['name']][$t['create_date']] = $t;$returndata = array();
foreach($res as $t) {
  foreach($t as $r) {
    ksort($r);
    $v = current($r);
    $p = end($r);
    $v['after_save'] = $p['after_save'];
    $v['create_date'] = $p['create_date'];
    $returndata[] = $v;
  }
}
print_r($returndata);Array
(
    [0] => Array
        (
            [id] => 123
            [name] => money
            [before_save] => 10
            [after_save] => 50
            [create_date] => 2014-10-25
        )    [1] => Array
        (
            [id] => 123
            [name] => duration
            [before_save] => 10
            [after_save] => 30
            [create_date] => 2014-10-24
        )    [2] => Array
        (
            [id] => 456
            [name] => money
            [before_save] => 60
            [after_save] => 100
            [create_date] => 2014-10-28
        )    [3] => Array
        (
            [id] => 456
            [name] => duration
            [before_save] => 60
            [after_save] => 100
            [create_date] => 2014-10-28
        ))

Answer 2

[code=php]$res = array();
foreach($data as  $t) $res[$t['id']][$t['name']][$t['create_date']] = $t;$returndata = array();
foreach($res as $t) {
  foreach($t as $r) {
    ksort($r);
    $v = array_pop($r);
    $p = array_shift($r);
    $v['before_save'] = $p['before_save'];
    $returndata[] = $v;
  }
}
print_r($returndata);/code]