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

$arraySize = count($results);
for($i=0; $i<$arraySize; $i++)
{
  $comma = ($i<$arraySize) ? ", " : "";
  echo $results[$i]->name.$comma;
}

Answer 2

Better:

$resultstr = array();
foreach ($results as $result) {
  $resultstr[] = $result->name;
}
echo implode(",",$resultstr);