PHP+MYSQL获取数据5

error_reporting('E_ALL&~E_NOTICE');  
    $page=$_GET['p'];
    $host="localhost";
    $username="root";
    $password="";
    $db="fy";
    $pageSize=10;
    $showPage=5; $conn=mysqli_connect($host,$username,$password);
    if(!$conn){
        echo "数据库连接失败";
        exit;
    }

    mysqli_select_db($conn,$db);
    $sql="SELECT * FROM page order by id ASC LIMIT ".($page-1)*$pageSize .",{$pageSize}";
    

    mysqli_query($conn,"SET NAMES UTF8");
     $result=mysqli_query($conn,$sql);
    echo "<div class='content'>";
    echo "<table border=1 cellspacing=0 width=30% align=center>";
    echo "<tr><td>ID</td><td>NAME</td></tr>";
     while ($row = mysqli_fetch_assoc($result)) {
         echo "<tr>";
         echo "<td>{$row['ID']}</td>";
         echo "<td>{$row['NAME']}</td>";
         echo "<tr>";
    }
    echo "</table>";
    echo "</div>";
    mysqli_free_result($result);
//获取数据总条数
    $total_sql="SELECT COUNT(*)FROM page";
    $total_result=mysqli_fetch_array(mysqli_query($conn,$total_sql));
    $total=$total_result[0];
    $total_pages=ceil($total/$pageSize);
    //关闭数据库
    mysqli_close($conn);



$total_sql="SELECT COUNT(*)FROM page";获取数据，然后是
$total_result=mysqli_fetch_array(mysqli_query($conn,$total_sql));
作为关联数组赋值还会形成数字数组
  $total=$total_result[0];意思是取出数组数组比如是124条
     $total_pages=ceil($total/$pageSize);
     然后是124/10进一既可以了,为什么，因为进一代表算上加上4还算一行啊
     


     while ($row = mysqli_fetch_assoc($result)) {
         echo "<tr>";
         echo "<td>{$row['ID']}</td>";
         echo "<td>{$row['NAME']}</td>";
         echo "<tr>";
    }意思是获取到数据以后，就形成关联数组，也就是idNAME为下标啦，赋值给$row一个一个来形成数据排列下来。