php - 在 PHP 中根据另一个数组的值对数组进行排序

Question

我有一个数组，其值如下:-

$Array1 = array("myfirst_value", "mysecond_value", "mythird_value"}

现在对于我的另一个数组，列表随机出现如下:-

$Array2 = array
(
    [4] => myfirst_value
    [8] => myforth_value
    [21] => mysecond_value
    [7] => myfifth_value
    [17] => mysixth_value
    [20] => mythird_value
    [16] => myseventh_value
)

我希望实现的是 $Array2 根据 $Array1 中值的顺序进行排序。

所以，我希望 $Array2 得到排序并变成:-

$Array2 = array
(
        [4] => myfirst_value
        [21] => mysecond_value
        [20] => mythird_value


        [7] => myfifth_value
        [8] => myforth_value
        [16] => myseventh_value
        [17] => mysixth_value

)

注意，Array1 的值首先排序，其余的只是输出，没有任何顺序。

谢谢

Answer 1

如果我没理解错的话

$Array1 = array("myfirst_value", "mysecond_value", "mythird_value");

$Array2 = array
(
    4 => myfirst_value,
    8 => myforth_value,
    21 => mysecond_value,
    7 => myfifth_value,
    17 => mysixth_value,
    20 => mythird_value,
    16 => myseventh_value
);

// Remove elements of the 1st array from the 2nd
function f ($v) { global $Array1;  return in_array($v, $Array1);}
$a1 = array_filter($Array2, 'f');    
// Take the rest elements
$a2 = array_diff_key($Array2, $a1);
// Combine back 
print_r($a1+$a2);

结果

Array
(
    [4] => myfirst_value
    [21] => mysecond_value
    [20] => mythird_value
    [8] => myforth_value
    [7] => myfifth_value
    [17] => mysixth_value
    [16] => myseventh_value
)