Question

我一直试图根据几个post方法参数来计算SQL表中的行数，因此，我已经能够连接到数据库并编写了用于计数的代码，但是以某种方式不是返回任何内容，邮递员窗口为空白，这意味着连接成功，但不知何故，

   <?php
 //checking if the script received a post request or not 
 if($_SERVER['REQUEST_METHOD']=='POST'){

 //Getting post data 
  $match_id=$_POST['match_id'];
  $rs=$_POST['rs'];

  require_once('connect.php');

$sql = "select count(1) From OneRecord where match_id='$match_id' and 
 rs='$rs'";

  if($result=mysqli_query($con,$sql)){

  $row = mysql_fetch_array($result);
  $total = $row[0];
  echo "Total rows: " . $total;

 }
 else
{

    echo 'oops! Please try again!';

   } 

    mysqli_close($con);
    }

     ?>

Answer 1

 <?php
   //checking if the script received a post request or not 
 if($_SERVER['REQUEST_METHOD']=='POST'){

   //Getting post data 
     $match_id=$_POST['match_id'];
 $rs=$_POST['rs'];

  require_once('connect.php');

 $sql = "select * From OneRecord where match_id='$match_id' and rs='$rs'";

  if($result=mysqli_query($con,$sql)){

// Return the number of rows in result set
 $rowcount=mysqli_num_rows($result);
 printf(" %d rows.\n",$rowcount);
// Free result 
 mysqli_free_result($result);
 }



  else
 {

echo 'oops! Please try again!';

} 

mysqli_close($con);
}

 ?>

如何基于几个参数获取数据库中的行数

1 个答案: