fast execution analitycs database with thousand rows to displaying in php - mysql

Question

i've table with a thousand rows and i want to creating analitycs with chart display my front end php
my table structure is
and how i display this data :
by user_agent column i display operating system, browsers, and devices.
for now i still using the old algorithm with looping using for () method and parsing each rows. And it takes a long time respond and displaying the data.
anyone knows how i can display this data without take long respond in my website? any idea? with the database structure or my php script?
Thankyou before.

Answer 1

Assuming you're loading all your data in a PHP script and postprocessing it in a for-loop in PHP, you should alter your database query. A GROUP BY statement might help. Of course, you need to alter your script to work with the new data. Revisiting your database structure is a good idea, too. A better approach might be not to save the whole user-agent string in one column but to use several columns.
Example before:
$data = $db->query('SELECT * FROM table');
for ($i = 0; $i <= $data->max(); i++) {
$row = $data->getRow($i);
postprocessRow($row); /* $sum += 1; */
}
Example after:
$data = $db->query('SELECT count(*) as weight, * FROM table GROUP BY user_agent');
for ($i = 0; $i <= $data->max(); i++) {
$row = $data->getRow($i);
postprocessRowWeighted($row); /* $sum += $row['weight']; */
}