如何组合两个具有重复值和数组长度差异的数组？

I have two arrays and I want to have one array in result and I want also have all values of the arrays even if they has the same values.

I have tried array_combine(), but with the duplicate keys it is not possible.

I've also tried $array1 + $array2, but that isn't the desired result either.

These are my sample input arrays:

$array1 = array(10) { 
    [0]=> string(1) "1" 
    [1]=> string(0) "" 
    [2]=> string(2) "12" 
    [3]=> string(2) "41" 
    [4]=> string(1) "5" 
    [5]=> string(1) "6" 
    [6]=> string(0) "" 
    [7]=> string(2) "11" 
    [8]=> string(2) "23" 
    [9]=> string(2) "10" }

$array2 = array(11) { 
    [0]=> string(1) "A" 
    [1]=> string(1) "B" 
    [2]=> string(1) "C" 
    [3]=> string(1) "D" 
    [4]=> string(1) "E" 
    [5]=> string(1) "F" 
    [6]=> string(1) "G" 
    [7]=> string(1) "H" 
    [8]=> string(1) "I" 
    [9]=> string(2) "J" 
    [10]=> string(1) "K" }

I should have output data like this:

 $array = array(11){
    [1]=> string(1) "A" 
    []=> string(1) "B" 
    [12]=> string(1) "C" 
    [41]=> string(1) "D" 
    [5]=> string(1) "E" 
    [6]=> string(1) "F" 
    []=> string(1) "G" 
    [11]=> string(1) "H" 
    [23]=> string(1) "I" 
    [10]=> string(2) "J" 
    []=> string(1) "K" }

You can use array_merge like below:

print_r(array_merge($array1, $array2));

or you can use array_combine: array_combine(keys,values);

$fname=array("Peter","Ben","Joe");
$age=array("35","37","43");

$c=array_combine($fname,$age);
print_r($c);

Alert: But you can't duplicate the keys.

You cannot use array_combine because array_combine expects the arrays to be the same size. And in fact, the output you ask for is not possible. Array keys need to be unique. You cannot have

[]=> string(1) "B"
[]=> string(1) "G" 
[]=> string(1) "K"

as these would overwrite each other. You'd end up with only K.

An alternative would be to assign an array when there are multiple values per key, e.g.

[]=> array(3) ["B", "G", "K"]

There is no built-in function for this though. You'll have to manually iterate both arrays and assign the values as needed. A simple solution would be to use a MultipleIterator because it can easily deal with differently sized arrays:

$keys = new ArrayIterator(["", 1, "", 2, "", 3]);
$values = new ArrayIterator(["A", "B", "C", "D", "E", "F", "G"]);

$flags = MultipleIterator::MIT_NEED_ANY|MultipleIterator::MIT_KEYS_ASSOC;
$pairs = new MultipleIterator($flags);
$pairs->attachIterator($keys, 'key');
$pairs->attachIterator($values, 'value');

$combined = [];
foreach ($pairs as $pair) {
    $key = $pair['key'];
    $val = $pair['value'];
    if (!isset($combined[$key])) {
        $combined[$key] = $val;
        continue;
    }
    if (!is_array($combined[$key])) {
        $combined[$key] = [$combined[$key]];
    }
    $combined[$key][] = $val;
}

print_r($combined);

This would then produce:

Array
(
    [] => Array
        (
            [0] => A
            [1] => C
            [2] => E
            [3] => G
        )

    [1] => B
    [2] => D
    [3] => F
)

If you want to combine the two arrays then you can use $array2's values as keys because they are unique (and it is the longer array so, $array1 won't get cut off).

$array1=["1","","12","41","5","6","","11","23","10"];
$array2=["A","B","C","D","E","F","G","H","I","J","K"];

foreach($array2 as $i=>$v){
    $result[$v]=(isset($array1[$i])?$array1[$i]:NULL);
}
var_export($result);

Output:

array (
  'A' => '1',
  'B' => '',
  'C' => '12',
  'D' => '41',
  'E' => '5',
  'F' => '6',
  'G' => '',
  'H' => '11',
  'I' => '23',
  'J' => '10',
  'K' => NULL,
)

Alternatively, you could pad $array1 then combine:

$array1=["1","","12","41","5","6","","11","23","10"];
$array2=["A","B","C","D","E","F","G","H","I","J","K"];
$array1=array_pad($array1,sizeof($array2),NULL);
$result=array_combine($array2,$array1);