如何在php中执行多次计数查询

Question

我从一张桌子执行了4次计数查询。但是我从所有查询中获得相同的输出。但表中的实际值不同。

这是我的桌子。

ID ||  notify_type     ||  status
__________________________________________

1  || resume_uploaded  ||    1

以下是我的疑问：

$notify_query1 = "select count(*) from notify where status = 1 and notify_type = 'resume_uploaded'";
$row1 = mysqli_query($db_manager->connection,$notify_query1);
$rcount = mysqli_num_rows($row1);

$notify_query2 = "select count(*) from notify where status = 1 and  notify_type = 'detail_filled'";
$row2 = mysqli_query($db_manager->connection,$notify_query2);
$dcount = mysqli_num_rows($row2);

$notify_query3 = "select count(*) from notify where status = 1 and notify_type = 'job_detailed'";
$row3 = mysqli_query($db_manager->connection,$notify_query3);
$jcount = mysqli_num_rows($row3);

$notify_query4 = "select count(*) from notify where status = 1 and notify_type = 'msg_sent'";
$row4 = mysqli_query($db_manager->connection,$notify_query4);
$mcount = mysqli_num_rows($row4);

我从所有四个查询中获得输出 1 ： 请帮帮我。

Answer 1

使用fetch_row()代替mysqli_num_rows()。

$result = $db->query("select count(*) from notify where status = 1 and notify_type = 'resume_uploaded'");
$row = $result->fetch_row();
echo 'No of count: '. $row[0];