What do you mean you don’t want to use loops? You’re going to have to iterate over it one way or another. Just take in each item individually and check if it’s in array2 as you go: items = set(array2) found = [i for i in array1 if i in items] Furthermore, depending on how … Read more
This whole task can be accomplished with just one slick, native function call — array_uintersect(). Because the two compared parameters in the custom callback may come either input array, try to access from the id column and if there isn’t one declared, then fallback to the parameter’s value. Under the hood, this function performs sorting … Read more
Convert arrays to a format, where array index is the sight_id: $b1 =array(); foreach($a1 as $x) $b1[$x[‘sight_id’]] = $x[‘location’]; $b2 =array(); foreach($a2 as $x) $b2[$x[‘sight_id’]] = $x[‘location’]; Calculate the differences and intersection: $c_intersect = array_intersect_key($b1,$b2); $c_1 = array_diff_key($b1,$b2); $c_2 = array_diff_key($b2,$b1); Convert arrays back to your format: $intersect_array = array(); foreach($c_intersect as $i=>$v) $intersect_array[] = … Read more