php recursive function for array

Question

I have a multidimentional array (MyArray), and want to "linearize" it to a string. So I try with this recursive function:

function RecursiveFunction($TheArray){
    foreach($TheArray as $key => $value){
        if(is_array($value)){
            $RecursiveOutput.="(".$key.")";
            RecursiveFunction($value); //-->this does't seem to work
        } else {
            $RecursiveOutput.="(".$value.")";
        }
    }
    return $RecursiveOutput;
}
echo RecursiveFunction($MyArray);

However, I'm getting the keys from the first level of the array only: the recursive recall doesn't seem to work. Can anyone spot the problem?

You do not pick the return value of the inner function call, which you need to do. — 1stthomas
– 1stthomas, Commented Nov 12, 2017 at 12:18
You are returning $RecursiveOutput but you aren't catching the return value. — Risul Islam
– Risul Islam, Commented Nov 12, 2017 at 12:19
Try this $RecursiveOutput .= "(".$key.")"."(".RecursiveFunction($value).")"; — Risul Islam
– Risul Islam, Commented Nov 12, 2017 at 12:21
@RisulIslam thats it! $RecursiveOutput .= "(".$key.")"."(".RecursiveFunction($value).")";. Post as an answer for accepting. Thanks a lot! — CMArg
– CMArg, Commented Nov 12, 2017 at 12:24

Risul Islam · Accepted Answer · 2017-11-12 12:26:39Z

1

You are returning $RecursiveOutput but you aren't catching the return value. Try this

$RecursiveOutput .= "(". $key .")(". RecursiveFunction($value) .")";

answered Nov 12, 2017 at 12:26

Risul Islam

8061 gold badge12 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

php recursive function for array

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related