I got this case. I want to return same value that contain from all array data.
$arr1 = [1,2,3,4,5,9,14];
$arr2 = [1,2,10];
$arr3 = [1,2,5];
$arr4 = [1,2,3,5];
The return array value after filtering should :
$finalArr = [1, 2];
Why 1, 2? Because it's contain in all array data. Then how to filter between array data and to finding final array in PHP? Thanks in advance.
This works!
$arr1 = [1,2,3,4,5,9,14];
$arr2 = [1,2,10];
$arr3 = [1,2,5];
$arr4 = [1,2,3,5];
$duplicates = checkduplicate($arr1, $arr2, $arr3, $arr4);
print_r($duplicates);
function checkduplicate($arr1, $arr2, $arr3, $arr4)
{
$keys = [];
foreach($arr1 as $key)
{
if(in_array($key, $arr2) && in_array($key, $arr3) && in_array($key, $arr4))
{
$keys[] = $key;
}
}
return $keys;
}
This iterates over all the items in the first array, and check if they also contain in the others
You can also use array intersect, which takes multiple arrays
$duplicates = array_intersect($arr1, $arr2, $arr3, $arr4);
array_intersect ?
print_r(array_intersect($arr1, $arr2, $arr3, $arr4));