php自定义函数实现二维数组排序功能

/**作用: 二维数组排序函数,支持多键名排序 * 返回: 排序好的数组 * 使用: array_msort(数组,需要排序的键名,排序方式); * 例子: array_msort($cflist,"chapter_orderid","SORT_ASC"); *    array_msort($arr,"name","SORT_ASC","type","SORT_DESC","size","SORT_ASC","SORT_STRING"); */function array_msort($ArrayData,$KeyName1,$SortOrder1 = "SORT_ASC",$SortType1 = "SORT_REGULAR") {  if(!is_array($ArrayData)) {    return $ArrayData;  }  // 获取参数数量.  $ArgCount = func_num_args();  // 排序,并放置到SortRule数组  for($i = 1;$i < $ArgCount;$i ++) {    $Arg = func_get_arg($i);    if(!eregi("SORT",$Arg)) {      $KeyNameList[] = $Arg;      $SortRule[] = '$'.$Arg;    }    else {      $SortRule[] = $Arg;    }  }  // Get the values according to the keys and put them to array.  foreach($ArrayData AS $Key => $Info) {    foreach($KeyNameList AS $KeyName) {      ${$KeyName}[$Key] = $Info[$KeyName];    }  }  // Create the eval string and eval it.  $EvalString = 'array_multisort('.join(",",$SortRule).',$ArrayData);';  eval($EvalString);  return $ArrayData;}