php - PDO - add values from several rows to get average -


i have pdo query returns number of rows. each row contains integer, , want next add integers can divide number of rows average. use foreach loop?

$rates = $users->rate_count($id); $ratecount = count($rates);

edit: got work sql - everyone:

public function rate_average($id) {     $query = $this->db->prepare("select avg(rate) `ratefeed` post=?");     $query->bindvalue(1, $id);     try{         $query->execute();     }catch(pdoexception $e){         die($e->getmessage());     }     return $query->fetchcolumn(); }   $rateaverage = $users->rate_average($id);

here go, in php:

$count = 0; $sum = 0; foreach ($array $element) {    $count = $count + 1;    $sum = $sum + $element; } print_r($sum/$count);

nevertheless, pointed out in comments, using sql performant bet. let me know if need more help.


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