check if two array have any value same

Question

Is there any way I could check if two arrays contain the same value?

array (size=1)
  0 => string '209' (length=3)

array (size=4)
  0 => string '209' (length=3)
  1 => string '208' (length=3)
  2 => string '1' (length=1)
  3 => string '2' (length=1)

I want to see if I can get 209 they match in both array

score 1 · Answer 1 · answered Sep 12 '19 at 15:53

1

You can use two functions in combination. First would be array_intersect which will pick the common values between arrays.

$result = array_intersect($array1, $array2);

This can contain duplicates as well. So after this you can filter values using

$result = array_unique($result)

These will be the common values between both arrays.

answered Sep 12 '19 at 15:53

Muhammad Tashfeen

572
4
13

why array_unique???? which duplicate value? array_intersect will retrun `Array ( [0] => 209 )` – devpro Sep 12 '19 at 15:55
array_intersect(array(1,2,2),array(1,2,3)); //=> array(1,2,2) – Muhammad Tashfeen Sep 12 '19 at 15:56
but this is not a rrequirement – devpro Sep 12 '19 at 15:56
Now there are 2 times number 2. ;) – Muhammad Tashfeen Sep 12 '19 at 15:57
1

For big arrays it is useful to remove duplicates. Yes not a requirement . – Muhammad Tashfeen Sep 12 '19 at 15:58

failedCoder · Answer 2 · 2019-09-12T15:59:28.017

0

You can use the in_array function for that

$searchVal = '209';
if (in_array($searchVal, $array1) && in_array($searchVal, $array2)) {
   echo "$searchVal is in both arrays!";
}

You can even make it into a function if you need to reuse this code alot:

function in_arrays($needle, $array1, $array2) {
    if (in_array($needle, $array1) && in_array($needle, $array2)) {
        return true;
    }
    return false;
}

// in use:
$searchVal = '209';
if(in_arrays($searchVal, $firstArray, $secondArray) {
    echo "$searchVal is found in both arrays";
}

edited Sep 12 '19 at 15:59

answered Sep 12 '19 at 15:50

failedCoder

1,346
1
14
38

This works but I don't want to type manually 209 209 is in array1 209 is in array2 aswell – jibin george Sep 12 '19 at 15:52
@jibingeorge Well you can just replace the 209 with a variable, I've edited my answer. – failedCoder Sep 12 '19 at 15:54

check if two array have any value same

2 Answers2