PHP Get Both Array Value and Array Key

PHP get both array value and array key

This should do it

foreach($yourArray as $key => $value) {
    //do something with your $key and $value;
    echo '<a href="' . $value . '">' . $key . '</a>';
}

Edit: As per Capsule's comment - changed to single quotes.

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

Comparing two arrays using both keys and values

array_diff() is there for this purpose. And its ok if the arrays are small, but for optimization, check out this post. It involves flipping the array value and key for faster comparison. And also this other stack comment for a hash table approach.

PHP: How to compare keys in one array with values in another, and return matches?

Update

Check out the answer from Michel: https://stackoverflow.com/a/30841097/2879722. It's a better and easier solution.

---

Original Answer

If I am understanding this correctly:

Returning a new array:

$array_new = [];
foreach($array_two as $key)
{
    if(array_key_exists($key, $array_one))
    {
        $array_new[$key] = $array_one[$key];
    }
}

Stripping from $array_one:

foreach($array_one as $key => $val)
{
    if(array_search($key, $array_two) === false)
    {
        unset($array_one[$key]);
    }
}

How to get both array key from value in 2 dimensional array (PHP)

You could probably do something like

function find_index($value) {
  foreach ($arr as $index => $index2) {
    $exists = array_search($value, $index2);
    if ($exists !== false) {
      echo "The result is {$index}, {$exists}";
      return true;
    }
  }
  return false;
}

how to get difference array using one an array index and another array key value?

Like that

$arr_diff  = array_diff_key($first, array_flip($second));

the trick is to array_flip the second array and use array_diff_key

Working example

$first = array(
    51581481 => array(
        'title' => 'Nike - L',
        'price' => '300.00',
        'vendor' => 'Vicky Fashion Point',
        'quantity' => -23,
    ),
    45747894 => array(
        'title' => 'Honor Band A (Black) - Default Title',
        'price' => '2249.00',
        'vendor' => 'Honor',
        'quantity' => 8,
    ),
);
$second = array(
    0 => 45747894,
    1 => 713776113,
);

var_dump(array_diff_key($first, array_flip($second))); 

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
        )

)

how to combine two arrays with the same array key then if the value is the same then it is not displayed and if it is different it will be displayed

If I got your description correctly, then all you need to do is loop over your first array, check if an item with the same index exists in your second array (not clear from your explanation, whether those will always have the exact same number of items or not), and if so, add it to the result array using the value from the first array as key:

$result = [];

foreach($naflr as $index => $value) {
    if(isset($fuzifikasi[$index])) {
        $result[$value][] = $fuzifikasi[$index];
    }
}

var_dump($result);

https://3v4l.org/L34El

---

Related Topics