PHP get values by given keys

Question

I have array like this:

$user = [
'id' => 1,
'fname' => 'name1',
'lname' => 'lname',
'age' => 20
];

I want to get values by given keys. Is there function already.

$userData = array....($user, ['fname', 'lname']); // get only fname and lname from user

I dont want to to for loops or similar.

Thanks

does array_filter fine? with ARRAY_FILTER_USE_KEY. Look at stackoverflow.com/questions/4260086/… — dWinder
– dWinder, Commented Mar 19, 2019 at 5:40
Without looping, it isn't possible. You may use functions but they do the same under the hood. Maybe you are looking for an elegant solution. — mighty_dev
– mighty_dev, Commented Mar 19, 2019 at 5:41
refrence here php.net/manual/en/function.array-intersect-key.php — Mohammad Malek
– Mohammad Malek, Commented Mar 19, 2019 at 5:54

Barmar · Accepted Answer · 2019-03-19 05:44:24Z

4

You can use array_intersect_key, after flipping the second array to an associative array.

$userData = array_intersect_key($user, array_flip(['fname', 'lname']));

answered Mar 19, 2019 at 5:44

Barmar

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2 Comments

Thanks, that was I was looking for, even though php creaters could create more descriptive function

I don't think this is a common operation. The function you want doesn't exist in JavaScript or Python, either.