Echo a comma on all but the last value? (result from mysql_fetch_array)

Question

How do I echo a comma on all but the last value? Here\'s my code:

while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {

    ECHO $servdescarrayrow         


        

Answer 1

This should work:

$i = 0;
$c = mysql_num_rows ( 
while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {
    $i++;
    if ( $i < mysql_num_rows ) echo $servdescarrayrow['serv_desc'].",";
    else echo $servdescarrayrow['serv_desc'];
}

Answer 2

$started = null;
while ($servdescarrayrow = mysql_fetch_array($servdescarray)) 
{
  ECHO $started.$servdescarrayrow['serv_desc'];
  if ( ! isset($started))
  {
    $started = ",";
  }
}

Answer 3

$count = 0;
while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {
    if ($count++ > 0) echo ",";
    echo $servdescarrayrow['serv_desc'];
}

Answer 4

$out = $mydb->getOne("SELECT group_concat(serv_desc) FROM table");

where $mydb is a database class, getOne() is a helper function returning first col of the first row and group_concat() output is limited to 1024 bytes but can be altered by setting appropriate variable.

But of course an average enthusiast from this site will always use generic PHP for such a task, as nobody will tell him there are more intelligent ways.

Answer 5

Another option:

$values = array();
while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {
    $values[] = $servdescarrayrow['serv_desc'];
}

echo implode(',', $values);

Answer 6

Try using rtrim on your output. For example:

$output = '';

while ($servdescarrayrow = mysql_fetch_array($servdescarray)) {    
    $output .= $servdescarrayrow['serv_desc'].",";
}

echo rtrim($output, ',');