How to remove last character from a string inside a loop

Question

I am trying to print the different category\'s selected in a single line in xml, like

meeting, food and drinks, sports


        

Answer 1

Or use a rtrim, rtrim( $cat , ',' ) http://php.net/rtrim

Answer 2

You can do this by [i used my variable]

$str = substr($str,0, (strlen($str)-1));

Answer 3

Call trim() with the optional second parameter as a ','

trim($cat_name, ',')

However, since you're doing this in a while loop, you should build an array then implode() it rather than building the string in the loop. This avoids the extra comma to begin with.

$arr = array();
while($row=mysql_fetch_array($e))
{
  $arr[] = $row['cat_name'];
}
$cat_name = implode(",", $arr);
// $cat_name is now "meeting, food and drinks, sports"