php - Oddly some times value float value returns 0 -


i'm beginner @ php trying solve usage of pdo in php...

i have pdo query: returns correct value (integer 1) don't know how, returns (0 or null) happens randomly , no idea why.

server windows based. double checked database.. multiplier values (integer 1)

$q = $db->prepare("select multiplier,balance buoys id=:id");  $aid = $_post['id']; $afishvalue = (float)0.4;  $q->execute(array(':id' => $aid)); $res = $q->fetch(pdo::fetch_obj);   $aevent = (integer)$res->multiplier; // how value times returns 0 values in database integer 1. $abuoybalance = (float)$res->balance;  $afishvalue = (float)$afishvalue * (float)$aevent;

most of time $afishvalue returns correctly times returns null. i'm totally stuck , googled hours... no idea next.

there few things check:

$q->execute(array(':id' => $aid)); $res = $q->fetch(pdo::fetch_obj);

on both of above statements, return should checked error event


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