Find a pair with the given sum in an array.

Find a pair with the given sum in an array.

Output:

 

arr = [4,6,2,1,9,3]

target = 10

 

Output:

Array
(
    [0] => 4,6
    [1] => 6,4
    [2] => 1,9
    [3] => 9,1
)
Code:

<?php

$arr = [8, 7, 2, 5, 3, 1];

$target = 10;

$result = array();

for($i = 0 ; $i < count($arr); $i++){

$cval = $arr[$i];

$nval = $target - $cval;

if(in_array($nval, $arr) && $cval + $nval == 10 && $cval != $nval){

    $val = $cval .",".$nval;

array_push($result, $val);

}

}

echo "<pre>";

print_r($result);

?>