Question

假设我有几个具有相同结构的多维数组：

Array ( [0] => Tips Object ( [id] => 1 [userId] => 10 )
    [1] => Tips Object ( [id] => 2 [userId] => 22 )
    [2] => Tips Object ( [id] => 3 [userId] => 33 )
    [3] => Tips Object ( [id] => 7 [userId] => 77 ) ) 


Array ( [0] => Tips Object ( [id] => 2 [userId] => 22 )
    [1] => Tips Object ( [id] => 3 [userId] => 33 )
    [2] => Tips Object ( [id] => 4 [userId] => 44 )
    [3] => Tips Object ( [id] => 5 [userId] => 55 )
    [4] => Tips Object ( [id] => 6 [userId] => 66 ) )

我需要一种方法来合并它们，所以我会得到这个：

Array ( [0] => Tips Object ( [id] => 1 [userId] => 10 )
    [1] => Tips Object ( [id] => 2 [userId] => 22 )
    [2] => Tips Object ( [id] => 3 [userId] => 33 )
    [3] => Tips Object ( [id] => 4 [userId] => 44 )
    [4] => Tips Object ( [id] => 5 [userId] => 55 )
    [5] => Tips Object ( [id] => 6 [userId] => 66 )
    [6] => Tips Object ( [id] => 7 [userId] => 77 ) )

真正的多维数组将更复杂，这只是为了帮助解释我需要的东西。

感谢!!!!

Answer 1

我假设你要做的是将两个排序的序列（通过id或userid）合并到最终的排序序列中。在这种情况下，请查看MergeSort中使用的合并过程：http://en.wikipedia.org/wiki/Merge_sort#Algorithm

Answer 2

$array1=array(  0=>array('id'=>'1','userid'=>'10'),
                1=>array('id'=>'2','userid'=>'22'),
                2=>array('id'=>'3','userid'=>'33'),
                3=>array('id'=>'7','userid'=>'77'));

$array2=array(  0=>array('id'=>'2','userid'=>'22'),
                1=>array('id'=>'3','userid'=>'33'),
                2=>array('id'=>'4','userid'=>'44'),
                3=>array('id'=>'5','userid'=>'55'),
                4=>array('id'=>'6','userid'=>'66'));

echo "<pre>";

$mix = array();
foreach($array2 as $k=>$value)
{
    if(!in_array($value,array_values($array1))){
        $array1[] = $value;
    }
}


function sortById($a, $b) {
    return $a['id'] - $b['id'];
}
usort($array1, 'sortById');
print_r($array1);
exit;

合并多维数组（PHP）

2 个答案: