php - 使用 Count(*) As 时如何从 mysql 获取结果

Question

当我的查询如下时，如果在 php 中，我怎样才能得到结果:

$query = "SELECT COUNT(*) AS call_count FROM `callsepaug` ";
        $query .= "WHERE start_time BETWEEN '" . $start_date . "' AND ";
        $query .= "'" . $end_date . "'";

Answer 1

与简单查询相同，您可以通过call_count获取count(*)

$queryBuild = "SELECT COUNT(*) AS call_count FROM `callsepaug` ";
        $queryBuild .= "WHERE start_time BETWEEN '" . $start_date . "' AND ";
        $queryBuild .= "'" . $end_date . "'");

$query = mysqli_query($queryBuild);

$result =  mysqli_fetch_array($query);

echo $result['call_count'];

或者与对象

$query = "SELECT COUNT(*) AS call_count FROM `callsepaug` ";
        $query .= "WHERE start_time BETWEEN '" . $start_date . "' AND ";
        $query .= "'" . $end_date . "'";

$result = mysqli_query($link, $query);

$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
echo $row["call_count"];