Show value from an array depending key value in PHP

Question

I've this array:

Array
(
    [Europa] => Array
        (
            [0] => Array
                (
                    [AVA_Id] => 1
                    [AVA_Country] => France
                    [AVA_City] => Paris
                )
        )
    [America] => Array
        (
            [0] => Array
                (
                    [AVA_Id] => 2
                    [AVA_Country] => Canada
                    [AVA_City] => Ottawa
                )
        )
)

I would like to read the 'Europa' section and get the City if the country is France.

Do you know why this code isn't working ?

foreach($bigArray as $key => $array) {
    $value = $array[2];
    if($bigArray[AVA_Country] == 'France')) {
        echo $bigArray['AVA_City']
    }
    else {
        echo 'No city found';        
    }
}

Thanks.

Nick · Accepted Answer · 2019-02-24 02:53:06Z

1

You should be checking $array in your loop, not $bigArray. Note you are also missing 's around AVA_Country, and there is an extra ) in your if statement and a missing ; from echo $value['AVA_City']. Additionally, you need to use another level of nesting to access the AVA* values, and there is no $array[2] value in your sample data so I've removed that line of code.

$found = false;
foreach($bigArray as $key => $array) {
    foreach ($array as $value) {
        if($value['AVA_Country'] == 'France') {
            echo $value['AVA_City'];
            $found = true;
        }
    }
    if (!$found) echo "No city found";
}

Output:

Paris

Demo on 3v4l.org

edited Feb 24, 2019 at 2:53

answered Feb 24, 2019 at 2:35

Nick

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4 Comments

Greg Schmidt Over a year ago

And $array doesn't have "2" as a key, and you never use the $value that you attempt to extract with that anyway...

Cave Johnson Over a year ago

This assumes you are iterating over the Europe subarray (in other words, $bigArray is actually Europe and not the whole array in the question)

Nick Over a year ago

@GregSchmidt thanks for the input, I've updated the answer.

Nick Over a year ago

@KodosJohnson thanks for the input, I've updated the answer.

Shim-Sao · Accepted Answer · 2019-02-24 02:51:43Z

0

You doesn't loop over all the deep of arrays.

$country = 'France';
$city = '';
$found = false;

foreach($world as $key => $continent) {
  foreach($continent as $k => $region) {
    if($region['AVA_Country'] == $country)) {
      $city = $region['AVA_City'];
      $found = true;
      break;
    }
  }
  if($found) break;
}
echo $city;

edited Feb 24, 2019 at 2:51

answered Feb 24, 2019 at 2:41

Shim-Sao

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