php - 显示当月的总行

Question

我需要按月显示数据库中的总行数。

有我的代码:

 <?php
 $sql = "SELECT aptName FROM property WHERE status='Sold' GROUP BY MONTH(createdate)";
 if ($result=mysqli_query($con,$sql))
 {
 $rowcount=mysqli_num_rows($result);
 printf("%d\n",$rowcount);
 mysqli_free_result($result);
 }
 ?>

我想显示当月售罄的特性数量。下个月也一样……

Answer 1

如果您使用的是 MySQL，您可以尝试以下查询:

 SELECT count(*) tot_apt_in_month
     FROM property 
     WHERE status='Sold' 
     AND MONTH(createdate) = month(curdate())

要查看结果，您至少应该 echo 行内容:

  while($row = $result->fetch_array())
  {
  echo $row['tot_apt_in_month'];
  echo "<br />";
  }

或

     "SELECT MONTH(createdate) my_month, count(*) tot_apt_in_month
     FROM property 
     WHERE status='Sold' 
     AND MONTH(createdate) = month(durdate())
     GROUP BY MONTH(createdate)
     ";

  while($row = $result->fetch_array())
  {
      echo $row['my_month'] . " " . $row['tot_apt_in_month'];
      echo "<br />";
  }