php 二维转一维

Array
(
    [0] => Array
        (
            [salesorderid] => 10001
            [createdtime] => 2016-10-10 10:10:10
        )

    [1] => Array
        (
            [salesorderid] => 10002
            [createdtime] => 2016-10-10 10:10:11
        )

    [2] => Array
        (
            [salesorderid] => 10003
            [createdtime] => 2016-10-10 10:10:12
        )

)

//二维转一维
public function array_column($input, $columnKey, $indexKey = NULL){
    $columnKeyIsNumber = (is_numeric($columnKey)) ? TRUE : FALSE;
    $indexKeyIsNull = (is_null($indexKey)) ? TRUE : FALSE;
    $indexKeyIsNumber = (is_numeric($indexKey)) ? TRUE : FALSE;
    $result = array();
    foreach ((array)$input AS $key => $row)
    {
      if ($columnKeyIsNumber)
      {
        $tmp = array_slice($row, $columnKey, 1);
        $tmp = (is_array($tmp) && !empty($tmp)) ? current($tmp) : NULL;
      }
      else
      {
        $tmp = isset($row[$columnKey]) ? $row[$columnKey] : NULL;
      }
      if ( ! $indexKeyIsNull)
      {
        if ($indexKeyIsNumber)
        {
          $key = array_slice($row, $indexKey, 1);
          $key = (is_array($key) && ! empty($key)) ? current($key) : NULL;
          $key = is_null($key) ? 0 : $key;
        }
        else
        {
          $key = isset($row[$indexKey]) ? $row[$indexKey] : 0;
        }
      }

      $result[$key] = $tmp;
    }

    return $result;
}

//二维数组去掉重复值
function array_unique_fb($array2D){
    foreach ($array2D as $v){
        $v=join(',',$v);  //降维,也可以用implode,将一维数组转换为用逗号连接的字符串
        $temp[]=$v;
    }
    $temp=array_unique($temp);    //去掉重复的字符串,也就是重复的一维数组
    foreach ($temp as $k => $v){
        $temp[$k]=explode(',',$v);   //再将拆开的数组重新组装
    }
    return $temp;
}

//二维数组去掉重复值,并保留键值
function array_unique_fb2($array2D){
    foreach ($array2D as $k=>$v){
        $v=join(',',$v);  //降维,也可以用implode,将一维数组转换为用逗号连接的字符串
        $temp[$k]=$v;
    }
    $temp=array_unique($temp); //去掉重复的字符串,也就是重复的一维数组
    foreach ($temp as $k => $v){
        $array=explode(',',$v); //再将拆开的数组重新组装
        //下面的索引根据自己的情况进行修改即可
        // $temp2[$k]['id'] =$array[0];
        // $temp2[$k]['title'] =$array[1];
        // $temp2[$k]['keywords'] =$array[2];
        // $temp2[$k]['content'] =$array[3];

        $temp2[$k]['filename'] =$array[0];
        $temp2[$k]['arr'] =$array[1];
    }
    return $temp2;
}

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http://www.php100.com/cover/php/188.html