Question about an array in a query

[eluser]CodeIgniterNoob[/eluser]
Hey guys I fixed it. What I did was, I built a buildString method that took that $key array and broke it down into a string. Like this:

Code:

$string = "";
foreach ($numbers as $key => $value)
{
    $string .= " ".$key." ";
}
return $string;

But I called the method like this:

Code:

$zipstring = explode(" ",buildString($numbers, $radius));

And created an array which ci could understand, because before it wasnt formatted properly. And now everything works like it should.

Thank you all.