Why is mysqli_fetch_row preventing all my results from displaying? - php

Question

I'm making a survey tracking website and I'm having trouble. I want to display all surveys that have been completed in the last 7 days. I'm using mysqli_fetch_row to see if any rows are retrieved, and if they are display them. If they aren't any compelted in the last 7 days, I want it to display the words "no recently compelted surveys to show."
<?php
require('db/connect.php');
if (!isset($_GET['sort'])) {
$sort = 'client_id';
} else {
$sort = $_GET['sort'];
}
if ($result = $db->query("SELECT client_id, date_added, client, email, date_sent, date_completed FROM clients NATURAL JOIN surveys WHERE date_completed BETWEEN DATE_SUB(CURDATE(), INTERVAL 7 DAY) AND CURDATE() ORDER BY $sort")) {//shows surveys completed in the last 7 days
if (mysqli_fetch_row($result) == 0) {
echo "No recently completed surveys to show.";
} else {
echo "<table>";
echo "<tr><th><a href='portal.php?sort=client_id'>ID</a></th><th><a href='portal.php?sort=date_added'>Date Added</a></th><th><a href='portal.php?sort=client'>Client</a></th><th><a href='portal.php?sort=email'>Email</a></th><th><a href='portal.php?sort=date_sent'>Sent</a></th><th><a href='portal.php?sort=date_completed'>Completed</a></th>";
$rows = $result->num_rows;
for ($num = 0; $num < $rows; ++$num) {
$row = $result->fetch_array(MYSQLI_NUM);
$client_id = $row[0];
$date = $row[1];
$client = $row[2];
$email = $row[3];
$sent = $row[4];
$completed = $row[5];
echo "<tr>";
echo "<td>$client_id</td>";
echo "<td>$date</td>";
echo "<td>$client</td>";
echo "<td>$email</td>";
echo "<td>$sent</td>";
echo "<td><a href='survey/completed/index.php?id=$client_id'>$completed</a></td>";
echo "</tr>";
}
echo "</table>";
}
}
?>
When I remove the if clause for mysqli_fetch_row, it displays ALL of the recently completed surveys, but if I leave it in, it ALWAYS leaves one out. Can anyone help?

Answer 1

You are discarding the first when you do the test. You can get the number of rows like this instead:
if ($result->num_rows == 0) {
echo "No recently completed surveys to show.";
} else {
// ....
}
Docs : mysqli_result::$num_rows