How to iterate a mysqli result set?

Question

I want to loop through the result set of the following query:

\"select uid from userbase\"

I am currently employing the following loop, but

Answer 1

You need to define a array and store your data into array inside loop . Use MYSQLI_ASSOC no need for incremented value

$deviceToken=array();
while ($row = $output->fetch_array(MYSQLI_ASSOC)) {
    $deviceToken[] = $row['uid'];
}
print_r($deviceToken);
for($i=0;$i<=count($deviceToken);$i++){
echo $deviceToken[$i];
}