Merge Two Arrays as Key Value Pairs in PHP

Merge two arrays as key value pairs in PHP

See array_combine() on PHP.net.

PHP merge two arrays on the same key AND value

Try out this code, It might help you, it's short and without traversing loops:

    usort($array2,function($a,$b){
        return strnatcmp($a['ur_user_id'],$b['ur_user_id']);
    });
    $array3 = array_replace_recursive($array1, $array2);

    $result = array_uintersect($array3,$array1,function($a,$b){
        return strnatcmp($a['ur_user_id'],$b['ur_user_id']);
    });
    print_r($result);

Output

Array
(
    [0] => Array
        (
            [ur_user_id] => 1
            [ur_fname] => PerA
            [ur_lname] => SonA
            [ur_code] => AA
            [ur_user_role] => testA
        )

    [1] => Array
        (
            [ur_user_id] => 2
            [ur_fname] => PerB
            [ur_lname] => SonB
            [ur_code] => BB
            [ur_user_role] => testB
        )

    [2] => Array
        (
            [ur_user_id] => 3
            [ur_fname] => PerC
            [ur_lname] => SonC
            [ur_code] => CC
            [ur_user_role] => testC
        )

)

And Here is Demo

Merge two arrays with unequal values into key value pair

This is how I solved it, using array_chunks only:

$values = array_chunk($data, count($headers));

This almost produced what I wanted, except the key was the index from the headers array, not the header itself. Since I still had I reference to the headers array, when I wanted to loop through, I did it like this:

When I wanted to use these values in the array, I extracted like this:

foreach ($values[$key] as $key => $value)
{
      $value; // the data
      $headers[$key]; // the header (String, not index)
}

PHP: Set two arrays into key and value

Do they need to be separate?

You could use array_combine() to assign a key to the value and then input is just $array[$input] - e.g.

$arr1 = ['A', 'B', 'C'];
$arr2 = [1, 2, 3];

$arr = array_combine($arr2, $arr1);

echo $arr[$_POST['input']]; # will display 2

merge multiple arrays with their same key value in PHP

Direct Output

If you just need to output your array directly to the page, you could do something like this:

foreach($original_array['category_id'] as $key => $categoryid) {
    $product = $original_array['product'][$key];
    $category = $original_array['category'][$key];
    
    echo "{$categoryid} , {$product} , {$category}\n";
}

This is pretty simple and only requires a single foreach loop. This is useful if you do not need to use this data multiple times in different places.

---

Formatted Array Output

If you may need to use this later in code, I would create a new array with the data in the loop above.
This is probably overkill if you don't ever need to access this data again.

$output = [];
foreach($original_array['category_id'] as $key => $categoryid) {
    $product = $original_array['product'][$key];
    $category = $original_array['category'][$key];
    
    $output[] = ['category_id' => $categoryid, 'product' => $product, 'category' => $category];
}

This would make $output be something like

Array
(
    [0] => Array
        (
            [category_id] => 1
            [product] => Apple
            [category] => Fruit
        )

    [1] => Array
        (
            [category_id] => 2
            [product] => Cow
            [category] => Meat
        )

)

Which, of course, is trivial to output in your required format.

foreach($output as $values) {
    echo "{$values['categoryid']} , {$values['product']} , {$values['category']}";
}

Merge two arrays of both values and make as one array like as one key other value in php

You can use array_combine, which

Creates an array by using one array for keys and another for its values

Like so:

$result = array_combine($arr1, $arr2)

The output:

Array
(
    [x-api-key] => cb2312b123113b321b
    [username] => john
    [password] => 1234567
)

Test the code here.

Merge two arrays by multiple key value pairs

This would be a simple approach:

<?php
$withOfd = [
  310 => [
    'walker_id' => 158,
    'walker' => "158 ??????????",
    'districts' => "...",
    'main_city' => "Jeddah",
    'sub_city' => "Jeddah",
    'ofd' => 25
  ],
  311 => [
    'walker_id' => 158,
    'walker' => "158 ??????????",
    'districts' => "...",
    'main_city' => "Jeddah",
    'sub_city' => "Khulais",
    'ofd' => 1
  ]
];

$withoutOfd = [
  260 => [
    'walker_id' => 158,
    'walker' => "158 ??????????",
    'main_city' => "Jeddah",
    'sub_city' => "Jeddah",
    'districts' => "...",
    'delivered' => 16,
    'undelivered' => 3,
    'returnedToowner' => 0
  ],
  261 => [
    'walker_id' => 158,
    'walker' => "158 ??????????",
    'main_city' => "Jeddah",
    'sub_city' => "Khulais",
    'districts' => "...",
    'delivered' => 0,
    'undelivered' => 1,
    'returnedToowner' => 0
  ]
];

$result = [];
array_walk($withOfd, function($with) use ($withoutOfd, &$result) {
  array_walk ($withoutOfd, function($without) use (&$result, $with) {
    if (   $with['walker_id'] == $without['walker_id']
        && $with['main_city'] == $without['main_city']
        && $with['sub_city']  == $without['sub_city']) {
      $result[] = array_merge($with, $without);
    }
  });
});
print_r($result);

The output obviously is:

Array
(
    [0] => Array
        (
            [walker_id] => 158
            [walker] => 158 ??????????
            [districts] => ...
            [main_city] => Jeddah
            [sub_city] => Jeddah
            [ofd] => 25
            [delivered] => 16
            [undelivered] => 3
            [returnedToowner] => 0
        )

    [1] => Array
        (
            [walker_id] => 158
            [walker] => 158 ??????????
            [districts] => ...
            [main_city] => Jeddah
            [sub_city] => Khulais
            [ofd] => 1
            [delivered] => 0
            [undelivered] => 1
            [returnedToowner] => 0
        )
)

UPDATE:

As a result of the comments and the discussion in the chat another variant which preserves entries in either array which do not have corresponding entries:

$result = [];
array_walk($withOfd, function($with, $withKey) use (&$withOfd, &$withoutOfd, &$result) {
  array_walk ($withoutOfd, function($without, $withoutKey) use (&$withOfd, &$withoutOfd, &$result, $with, $withKey) {
    if (   $with['walker_id'] == $without['walker_id']
        && $with['main_city'] == $without['main_city']
        && $with['sub_city']  == $without['sub_city']) {
      $result[] = array_merge($with, $without);
      unset($withOfd[$withKey]);
      unset($withoutOfd[$withoutKey]);
    }
  });
});
$result = array_merge($result, $withOfd, $withoutOfd);

php combine two array's subarrays where value of certain key is equal

Try this:

foreach($arr_b as $b_item) {
    foreach($arr_a as $key => &$a_item) {
        if ($b_item['usrsID'] == $a_item['usrsID']) {
            $a_item['id'] = $b_item['usrsID'];
            $a_item['avatarID'] = $b_item['avatarID'];
        }
    }
}

Your output of $_arr_a will be:

Array
(
    [0] => Array
        (
            [ID] => 5
            [usrsID] => 3
            [tid] => 19
            [txtid] => 22
            [id] => 3
            [avatarID] => 22
        )

    [1] => Array
        (
            [ID] => 6
            [usrsID] => 1
            [tid] => 19
            [txtid] => 23
            [id] => 1
            [avatarID] => 1
        )

    [2] => Array
        (
            [ID] => 7
            [usrsID] => 2
            [tid] => 19
            [txtid] => 24
            [id] => 2
            [avatarID] => 3
        )

    [3] => Array
        (
            [ID] => 8
            [usrsID] => 1
            [tid] => 19
            [txtid] => 25
            [id] => 1
            [avatarID] => 1
        )

)

---

Related Topics