Output in desired format

Question

$values = array();
while($root = mysql_fetch_array($res)){

$root["prefix"] = $this->get_prefix($root['position']);
}
return $values;

I am getting the output as >>,position name

But I want... >>position name... is it possible to remove the comma.

Answer 1

Doesn't knowing the original code...

$root["prefix"] = preg_replace('/^>>,/','>>', $this->get_prefix($root['position']));