PHP学习：php打乱数组二维数组多维数组的简单实例

<?php 
function shuffle_assoc($list) { 
 if (!is_array($list)) return $list; 
 $keys = array_keys($list); 
 shuffle($keys); 
 $random = array(); 
 foreach ($keys as $key) 
  $random[$key] = $list[$key]; 
 return $random; 
} 
?>

<?php 
function shuffle_assoc($list) { 
if (!is_array($list)) return $list; 
$keys = array_keys($list); 
shuffle($keys); 
$random = array(); 
foreach ($keys as $key) 
$random[$key] = shuffle_assoc($list[$key]); 
return $random; 
} 
?>

/**
* Shuffles an associative array recursive
* 
* @param array $array
* @return array
*
*/
function rec_assoc_shuffle($array)
{
 $ary_keys = array_keys($array);
 $ary_values = array_values($array);
 shuffle($ary_values);
 foreach($ary_keys as $key => $value) {
  if (is_array($ary_values[$key]) AND $ary_values[$key] != NULL) {
   $ary_values[$key] = rec_assoc_shuffle($ary_values[$key]);
  }
  $new[$value] = $ary_values[$key];
 }
 return $new;
}