相同的查询，php vs phpmyadmin中的结果不同-为什么？

Question

I am trying to get the total actions from each employee in a MySQL database. My script is giving me a significantly lower total than the number in the database for all employees. I am using a SUM function in the query. The query works fine in phpmyadmin, but not in my script. Any ideas why this is happening.

$query = "SELECT user_id, SUM(num_actions) as action FROM pro_actions GROUP BY user_id ORDER BY action DESC";
if ($result = $db->query($query)) {
    $count = 0; // this is the total of all employee actions. which adds up correctly!
    while ($row = mysqli_fetch_array($result)) {
        $count += $row['action'];
        echo '<tr><td>';
        echo $row['user_id'];
        echo '</td><td>';
        echo $row['action'];
        echo '</td></tr>';
    }
    $result->free();
}

When I run this script, employee 1005 has 63 actions. However, when I run this query in phpmyadmin, employee 1005 has 194 actions (which is correct). All employees have fewer actions in the output of the script. The interesting thing is that the $count variable outputs the correct amount, which is the total of all actions... Please help with this glitch.

Answer 1

$query = "SELECT user_id, SUM(num_actions) as action FROM pro_actions GROUP BY user_id ORDER BY action DESC";
if ($result = $db->query($query)) {
    $count = 0; // this is the total of all employee actions. which adds up correctly!
    while ($row = mysqli_fetch_array($result)) {
        $count += $row['action'];
        echo '<tr><td>';
        echo $row['user_id'];
        echo '</td><td>';
        echo $row['action'];
        echo '</td></tr>'; //tag mismatch
    }
    $result->free();
}