PHP add key => value to each array in array

Question

Best shown in practice, I have 2-dimensional array like this:

array(3) {
    [0]=> array(2) {
        ["id"]=> string(4) "3229"
        ["name"]=> string(0) "foo"
    }
    [1]=> array(2) {
        ["id"]=> string(4) "2588"
        ["name"]=> string(4) "1800"
    }
    [2]=> array(2) {
        ["id"]=> string(4) "3234"
        ["name"]=> string(4) "8100"
    }
}

And i want to add a ["type"]=> string(0) "type1" to each array so i would get this

array(3) {
    [0]=> array(2) {
        ["id"]=> string(4) "3229"
        ["name"]=> string(0) "foo"
        ["type"]=> string(0) "type1"
    }
    [1]=> array(2) {
        ["id"]=> string(4) "2588"
        ["name"]=> string(4) "1800"
        ["type"]=> string(0) "type1"
    }
    [2]=> array(2) {
        ["id"]=> string(4) "3234"
        ["name"]=> string(4) "8100"
        ["type"]=> string(0) "type1"
    }
}

I know there is a pretty simple way how to do this with foreach and array_push() but is there some simple one-liner for this?

score 2 · Accepted Answer · answered Aug 04 '13 at 12:48

2

foreach ($array as &$val) $val['type'] = 'type1';

I think it's fastest way

answered Aug 04 '13 at 12:48

UnknownError1337

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Just did the same thing, SO made me lazy :) – kajacx Aug 04 '13 at 12:49
Please don't forget to `unset($val)` after this code. – c0deMaster Jun 06 '23 at 12:16

score 2 · Answer 2 · edited Aug 04 '13 at 12:52

2

array_walk($array, function(&$value, $key){$value['type'] = 'type1';})

would also work in php 5.3+

edited Aug 04 '13 at 12:52

answered Aug 04 '13 at 12:49

exussum

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yes, but in this case, it will take a bit more time than foreach with reference – UnknownError1337 Aug 04 '13 at 12:51
I agree, but you beat me to the foreach answer, So I posted an alternative – exussum Aug 04 '13 at 12:53

PHP add key => value to each array in array

2 Answers2