Array-Merge on an associative array in PHP

Question

How can i do an array_merge on an associative array, like so:

Array 1:

$options = array (
\"1567\" => \"test\",
\"1853\" => \"test1\",
);


        

Answer 1

This code could be used for recursive merge:

function merge($arr1, $arr2){
        $out = array();
        foreach($arr1 as $key => $val1){
            if(isset($arr2[$key])){
                if(is_array($arr1[$key]) && is_array($arr2[$key])){
                    $out[$key]=  merge($arr1[$key], $arr2[$key]);
                }else{
                    $out[$key]= array($arr1[$key], $arr2[$key]);
                }
                unset($arr2[$key]);
            }else{
                $out[$key] = $arr1[$key];
            }
        }
        return $out + $arr2;
 }