Create a comma-separated string from a single column of an array of objects

Question

I\'m using a foreach loop to echo out some values from my database, I need to strip the last comma from the last loop if that makes sense.

My loop is just simple, as

Answer 1

$a[0] = 'John Doe';       
$a[1] = 'Jason statham';       
$a[2] = 'Thomas Anderson';
$size = count($a);
foreach($a as $key=>$name){
    $result .= $name;
    if($size > $key+1) $result .=', ';
}
echo $result;