PHP: Concatenate array element into string with ',' as the separator

Question

Is there a quick way ( existing method) Concatenate array element into string with ',' as the separator? Specifically I am looking for a single line of method replacing the following routine:

    //given ('a','b','c'), it will return 'a,b,c'
private static function ConstructArrayConcantenate($groupViewID)
{
 $groupIDStr='';
  foreach ($groupViewID as $key=>$value)
 {
  $groupIDStr=$groupIDStr.$value;
  if($key!=count($groupViewID)-1)
    $groupIDStr=$groupIDStr.',';

 }  

 return $groupIDStr;
}

Answer 1

You want implode:

implode(',', $array);

http://us2.php.net/implode

Answer 2

implode()

$a = array('a','b','c');
echo implode(",", $a); // a,b,c

Answer 3

This is exactly what the PHP implode() function is for.

Try

$groupIDStr = implode(',', $groupViewID);

Answer 4

$arr = array('a','b','c');
$str = join(',',$arr);

join is an alias for implode, however I prefer it as it makes more sense to those from a Java or Perl background (and others).

Answer 5

implode() function is the best way to do this. Additionally for the shake of related topic, you can use explode() function for making an array from a text like the following:

$text = '18:09:00'; $t_array = explode(':', $text);