PHP MySQL 没有返回正确的计数

Question

我已使用 phpMyAdmin 验证了我的查询。计数是 130。但我的代码给出的计数是 1。

$query2 = "SELECT COUNT(*) FROM webvulns";
$result2 = mysqli_query($connection, $query2);
confirm_query($result2);
$rowcount=mysqli_num_rows($result2);
echo $rowcount;
// Free result set.
mysqli_free_result($result2);

Answer 1

mysqli_num_rows 返回行数。你只有 1 行。该行将包含 130。获取结果。

$query2 = "SELECT COUNT(*) as da_count FROM webvulns";
$result2 = mysqli_query($connection, $query2);
confirm_query($result2);
$row = mysqli_fetch_assoc($result2);
$rowcount=$row['da_count'];
echo $rowcount;
// Free result set.
mysqli_free_result($result2);