php 二维数组

  0 => 
    array =>
      'orderno' => '150228085016' 
      'delivery_time' => '1425124096' 
      'create_time' => '1425174370'
  1 => 
    array =>
      'orderno' => '150228084786' 
      'delivery_time' => '1425124096'
      'create_time' => '1425174374' 
  2 => 
    array =>
      'orderno' => '150228090539'
      'delivery_time' => '1425123584'
      'create_time' => '1425174387'

数组如上，我想使用对每组数组中的delivery_time 和 create_time键使用Date函数，得出结果如下：

  0 => 
    array =>
      'orderno' => '150228085016' 
      'delivery_time' => '2015-03-11' 
      'create_time' => '2015-03-11'
  1 => 
    array =>
      'orderno' => '150228084786' 
      'delivery_time' => '2015-03-11'
      'create_time' => '2015-03-11' 
  2 => 
    array =>
      'orderno' => '150228090539'
      'delivery_time' => '2015-03-11'
      'create_time' => '2015-03-11'

除了循环之外，PHP数组有没有内置的方法?

---

array_column是5.5才支持的函数；需要向下兼容。

使用array_walk_recursive处理，会完美解决你的问题~~

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    $arr = array_map(function ($n) {
        return date('Y-m-d', $n);
    }, array_column($arr, 'create_time'));

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假设你上面那个数组叫 $a...

function mydate($t)
{
    return date("Y/m/d",$t);
}
$ct = array_map("mydate",array_column($a,'create_time'));
print_r($ct);

---

array_map