PHP mysql_num_rows（）函数不起作用

Question

This is my php code to print number of rows in database.Actually there are 3 rows in the database matching to my query.But "echo $num" in my code is not printing anything Please help.This is my code

<?php
include('db.php');
$name=$_POST['name'];
$passwd=$_POST['password'];
$qry="SELECT * FROM user where name='$name' AND password='$passwd'" ;
$result=mysqli_query($con,$qry) or die("Error attempting query");
$num  = mysql_num_rows($result);
echo $num;
?>

Answer 1

You should use mysqli_num_rows($result); instead of mysql_num_rows($result); .