Without using a loop, how can I "chop" an array of associative arrays into separate arrays, grouped by keys?

Question

Say I have the following array of associative arrays:

$MasterArr = array(
    array("food" => "apple", "taste" => "sweet"),
    array("food" => "lemon", "taste" => "sour"),
    array("food" => "steak", "taste" => "meaty")
);

Without using a foreach loop, is there a way that can I "chop" it into 2 different arrays whose values come from the same keys, so it looks like this:

$FoodArr = array("apple","lemon","steak");
$TasteArr = array("sweet","sour","meaty");

Just to say: At the end you will always loop through your array. If you now see it in your written code or not. — Rizier123
– Rizier123, Commented Jul 28, 2016 at 21:31
@Nitin I like to minimize lines of code where I can, so I had a feeling there was some 1-liner way to do this — user3163495
– user3163495, Commented Jul 28, 2016 at 21:33
@user3163495 Did not know that array_column() is faster than foreach. stackoverflow.com/questions/35319318/… — Nitin
– Nitin, Commented Jul 28, 2016 at 21:41

trincot · Accepted Answer · 2016-07-28 21:28:17Z

4

You can use array_column for that:

$FoodArr = array_column($MasterArr, 'food');
$TasteArr = array_column($MasterArr, 'taste');

answered Jul 28, 2016 at 21:28

trincot

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1 Comment

user3163495 Over a year ago

Thanks, I fixed the typo in the question. I'll mark this as answer after 10 mins (SO making me wait)

FirstOne · Accepted Answer · 2016-07-28 21:34:05Z

3

For PHP < 5.5.0, you can use array_map:

$FoodArr = array_map(function($v){ return $v['food']; }, $MasterArr);
$TasteArr = array_map(function($v){ return $v['taste']; }, $MasterArr);

answered Jul 28, 2016 at 21:34

FirstOne

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