Count and rows code

[rhodarose]

What is the explanation or meaning of this code:

$totalarr = count($opname) - 1; 

and

$totalrows = mysql_num_rows($result);
        $trows = $totalrows - 1; 

Thank you

[Nile]

count() counts the number of elements in an array

$array = array('Dog', 'Cat', 'Apple', 'Pear');
echo count($array); // 4 

mysql_num_rows() returns the amount of returned rows from a query.

[rhodarose]

count() counts the number of elements in an array

$array = array('Dog', 'Cat', 'Apple', 'Pear');
echo count($array); // 4 

mysql_num_rows() returns the amount of returned rows from a query.

and why the totalrows result need minus 1?

[Nile]

It depends on where it's being used - it's just subtracting one away probably for a reason that comes up later in the script. I dont know.