Counting the number of values ​​in an array row?

Question

PHP

Good afternoon. I output an array with a while loop, the array has such a line $sname = $row['sname'];
. In it, the values ​​are listed separated by commas, but how to count the number of values ​​in this line?
Using the count() function; did not help.
update 1.1 counting the number of commas is not suitable, for example, the field can be empty, or with one value, in both cases there will be no comma.

Answer 1

$count = count(explode(',', $str));

Answer 2

Count the number of commas in a string+1

Answer 3

Count the number of rows matching the query:

SELECT COUNT(column_name) FROM table_name;