pdo - MySQL Float(7,2) to PHP Float -

i fetching (with php pdo) mysql value (stored in signed float(7,2) format).

result ===================== database = 8.9 //correct value php = 8.8999996185303 //fetch php pdo 

sample code:

$qry = 'select hours sample filter=?;'; $stmt = $db->prepare($qry); $stmt->execute(array($filter)); while($row = $stmt->fetch(pdo::fetch_assoc)) {     echo $row['hours']; } 

what best possible way fetch data db? ive read floating point approximalization issue in php. thinking perhaps change sql like:

select (hours * 100) butsoexpensiveondatabase etc... 

or using round or number_format in php. guys suggest , why?

changing table structure not option!

(reason: old legacy code need support + no time + no budget)

you can this

"select round(hours, 2) sample filter=?;"