CODEWITHSUNDEEP
phparraysvariablesmatching
haco
haco

Reputation: 133

Find the array key of matching values

I try to get the array key of matching values. It looks like that:

$someId = 2

$array[0][id]   = "1";
$array[0][firstname]  = "dude1";

$array[1][id]   = "2";
$array[1][firstname]  = "dude2";

$array[2][id]   = "3";
$array[2][firstname]  = "dude3";

How I get the array key e.g. "1" ($array[1]), by matching the var "$someId = 2" with the unique IDs ( $array[1][id]) in the array?

Basically: $someId === $array[x][id] > returns the array $array[x] where it matches.

Upvotes: 1

Views: 221

Answers (2)

Mark Baker
Mark Baker

Reputation: 212402

array_filter() retains associativity

$result = array_filter(
    $array,
    function ($item) use ($personId) {
        return ($item['id'] == $personId);
    }
);

var_dump(array_keys($result));

Upvotes: 1

MrCode
MrCode

Reputation: 64526

A simple foreach will do it:

$someId = 2;

foreach($array as $person)
{
    if($person['id'] == $someId)
    {
        // found a match, do something with $person
        // ...
        break; // remove the break if you want to continue searching after a match
    }
}

If you want the key then change to

foreach($array as $key => $person)

Upvotes: 2

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