php - String from Mysql results -


im grabbing voltages database , displaying them on page code below:

$separator = '';  if ($result->num_rows > 0) {     while ($row = $result->fetch_assoc()) {         $volt = $separator.$row['volt'];         $separator = ',';         echo $volt;     } }

this outputs following: 12.34,12.45,13.01 etc how call data outside while loop?

if echo $volt outside 1 value ,12.34 example not full string?

save data array :

$volts = [];  if ($result->num_rows > 0) {     while ($row = $result->fetch_assoc()) {         $volts[] = $row['volt'];     } }  echo implode(',',$volts);

i used implode() join elements of array


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