How to find out if in nested array

Question

I have the following array:

Array
(
    [0] => Array
        (
            [country_id] => 1
        )

    [1] => Array
        (
            [country_id] => 2
        )

    [2] => Array
        (
            [country_id] => 3
        )

)

I want to basically check if a value is in this array. So if country_id = 1, then it's true, etc.

any help would be awesome!

Marc B · Accepted Answer · 2011-05-12 19:22:57Z

6

$found = false;
foreach ($your_array as $key => $element) {
   if (isset($element['country_id']) && ($element['country_id'] == 1)) {
       $found = $key;
       break;
   }
}

answered May 12, 2011 at 19:22

Marc B

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2 Comments

scurker Over a year ago

Might be an issue when $key == 0.

Marc B Over a year ago

Only if you do if (!$found). Doing if ($found !== FALSE) will handle that.

Cory Powers · Accepted Answer · 2011-05-12 19:26:12Z

-1

There isn't a single magic function in PHP that will make this a simple solution, you could use something like array_map to accomplish this but you will probably be better off just iterating through the entire array and store the entries that match your criteria.

answered May 12, 2011 at 19:26

Cory Powers

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