";
$old = array();
$new = array();
if( preg_match_all("/([a-z0-9]+(?=(?:\s{1,})?,(?:\s{1,})?))/i",$a,$m) )
{
foreach($m[0] as $match)
{
array_push($old,$match);
array_push($new,$match);
}
}
sort($new);
foreach($old as $key => $word)
{
$a = str_replace($word,$new[$key],$a);
}
echo $a;
echo "
";
echo "";
var_dump($old);
echo "
";
echo "
";
echo "";
var_dump($new);
echo "
";
?>