Find and get array key from multilevel array from other array

Question

i have this array structure, and i want to find and compare with other array that i have.

This is the array that i want search:

array (size=7)
  0 => 
    array (size=9)
      0 => string 'Dorado' (length=6)
      1 => string '64GB' (length=4)
      2 => string 'Plastico' (length=8)
      'vlr' => string '60000' (length=5)
      'pcost' => string '0' (length=1)
      'pcomp' => string '0' (length=1)
      'sede' => 
        array (size=1)
          9 => string '0' (length=1)
      'ptc' => 
        array (size=2)
          12 => string '0' (length=1)
          11 => string '0' (length=1)
      's' => string '' (length=0)
  1 => 
    array (size=9)
      0 => string 'Blanco' (length=6)
      1 => string '32GB' (length=4)
      2 => string 'Plastico' (length=8)
      'vlr' => string '40000' (length=5)
      'pcost' => string '0' (length=1)
      'pcomp' => string '0' (length=1)
      'sede' => 
        array (size=1)
          9 => string '0' (length=1)
      'ptc' => 
        array (size=2)
          12 => string '0' (length=1)
          11 => string '0' (length=1)
      's' => string '' (length=0)
  2 => 
    array (size=9)
      0 => string 'Blanco' (length=6)
      1 => string '64GB' (length=4)
      2 => string 'Madera' (length=6)
      'vlr' => string '60000' (length=5)
      'pcost' => string '0' (length=1)
      'pcomp' => string '0' (length=1)
      'sede' => 
        array (size=1)
          9 => string '0' (length=1)
      'ptc' => 
        array (size=2)
          12 => string '0' (length=1)
          11 => string '0' (length=1)
      's' => string '' (length=0)
  3 => 
    array (size=9)
      0 => string 'Verde' (length=5)
      1 => string '64GB' (length=4)
      2 => string 'Madera' (length=6)
      'vlr' => string '40000' (length=5)
      'pcost' => string '0' (length=1)
      'pcomp' => string '0' (length=1)
      'sede' => 
        array (size=1)
          9 => string '0' (length=1)
      'ptc' => 
        array (size=2)
          12 => string '0' (length=1)
          11 => string '0' (length=1)
      's' => string '' (length=0)

An this is the array with search values:

Array
(
    [0] => Blanco
    [1] => 32GB
    [2] => Plastico
)

I have the key and value, but i need find, in this example the main key is 1 in the long and main array, how can i get that?

PD: the number of search values are the numbers inside main arrays

Vasilis G. · Accepted Answer · 2020-09-09 19:00:01Z

1

Let's say that elements is the name of the array that you want to iterate over and find the index whose first three values match the search values. You can simply iterate over the elements, checking if the values match and if they do, then you can store the index in a variable called $wantedKey:

$target = array(
    '0' => Blanco
    '1' => 32GB
    '2' => Plastico
);

$wantedKey = null;

foreach($elements as $key => $elem){
  if($elem[0] == $target[0] && $elem[1] == $target[1] && $elem[2] == $target[2]){
      $wantedKey = $key;
      break;
   }
}

echo $wantedKey;

In case you have an arbitrary amount of values, you can use a foreach to iterate over them and check if they match:

foreach($elements as $key => $elem){
    $sameValues = true;
    foreach($target as $t_key => $t_value){
        if($elem[$t_key] != $t_value){
            $sameValues = false;
            break;
        }
    }
    if($sameValues){
        $wantedKey = $key;
        break;
    }
}

echo $wantedKey;

edited Sep 9, 2020 at 19:00

answered Sep 8, 2020 at 20:01

Vasilis G.

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2 Comments

Rocket Over a year ago

Yes i have the principal key with this code, but i have one last problem, if the $target array have multiple values, not 3 like in the example, for example: ``` $target = array( '0' => Blanco '1' => 32GB '2' => Plastico '3' => 'Other' ); ``` Its for multiple select items and search that in array principal

Vasilis G. Over a year ago

@Rocket Updated my answer.

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