如何通过分页从我的 mysql 数据库表中每页仅显示 5 条记录?-php问题

How to display only 5 records per page from my mysql database table through pagination?(如何通过分页从我的 mysql 数据库表中每页仅显示 5 条记录?)

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问题描述

我想通过分页显示每页五条记录(mysql,php,html,css)直到显示所有记录，页面导航必须像，Page: 1 2 3 4 5 6 7 7 8... 最后.

I want to display five record per page through pagination (mysql,php,html,css) until all the records are displayed, navigation to pages must be like, Page: 1 2 3 4 5 6 7 7 8... Last.

这是我查看 emp_master 表中所有记录的代码.我是 PHP 新手，所以请为分页编写一个易于理解的代码.我见过几个例子，但它们不起作用.

HERE IS MY CODE TO VIEW ALL THE RECORDS FROM emp_master table. I am new to PHP so please write an easily understandable code for pagination. I have seen few examples but they are not working.

<?php
$con=mysqli_connect("localhost","user","password","dataplus");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

$result = mysqli_query($con,"SELECT * FROM emp_master");

echo "<table border='1'>";

$i = 0;
while($row = $result->fetch_assoc())
{
if ($i == 0) {
  $i++;
  echo "<tr>";
  foreach ($row as $key => $value) {
    echo "<th>" . $key . "</th>";
  }
  echo "</tr>";
 }
 echo "<tr>";
 foreach ($row as $value) {
  echo "<td>" . $value . "</td>";
 }
 echo "</tr>";
 }
 echo "</table>";

  mysqli_close($con);

我想通过分页每页显示 5 条记录，直到显示所有记录，页面导航必须像，Page: 1 2 3 4 5 6 7 7 8... Last.

I want to display five record per page through pagination untill all the records are displayed, navigation to pages must be like, Page: 1 2 3 4 5 6 7 7 8... Last.

以下代码无效:

     $dbhost="localhost";
     $dbuser="10053"; 
     $dbpass="n6867242"; 
 $database="0368";

     $rec_limit = 10;
     $conn = mysql_connect($dbhost, $dbuser, $dbpass);

     if(! $conn ) {
        die('Could not connect: ' . mysql_error());
     }
     mysql_select_db('1005368');

     /* Get total number of records */
     $sql = "SELECT count(emp_id) FROM emp_master ";
     $retval = mysql_query( $sql, $conn );

     if(! $retval ) {
        die('Could not get data: ' . mysql_error());
     }
     $row = mysql_fetch_array($retval, MYSQL_NUM );
     $rec_count = $row[0];

     if( isset($_GET{'page'} ) ) {
        $page = $_GET{'page'} + 1;
        $offset = $rec_limit * $page ;
     }else {
        $page = 0;
        $offset = 0;
     }

     $left_rec = $rec_count - ($page * $rec_limit);
     $sql = "SELECT emp_id, emp_name, e_mail ". 
        "FROM emp_master ".
        "LIMIT $offset, $rec_limit";

     $retval = mysql_query( $sql, $conn );

     if(! $retval ) {
        die('Could not get data: ' . mysql_error());
     }

     while($row = mysql_fetch_array($retval, MYSQL_ASSOC)) {
        echo "EMP ID :{$row['emp_id']}  <br> ".
           "EMP NAME : {$row['emp_name']} <br> ".
           "EMP MAIL : {$row['e_mail']} <br> ".
           "--------------------------------<br>";
     }

     if( $page > 0 ) {
        $last = $page - 2;
        echo "<a href = "$_PHP_SELF?page = $last">Last 10 Records</a> |";
        echo "<a href = "$_PHP_SELF?page = $page">Next 10 Records</a>";
     }else if( $page == 0 ) {
        echo "<a href = "$_PHP_SELF?page = $page">Next 10 Records</a>";
     }else if( $left_rec < $rec_limit ) {
        $last = $page - 2;
        echo "<a href = "$_PHP_SELF?page = $last">Last 10 Records</a>";
     }

     mysql_close($conn);

推荐答案

如果您使用的是 mysqli，代码如下

 $conn=mysqli_connect("localhost","root","","ui");


 $start=0;
  $limit=5;

  $t=mysqli_query($conn,"select * from form_table");
  $total=mysqli_num_rows($t);



   if(isset($_GET['id']))
   {
        $id=$_GET['id'] ; 
                        $start=($id-1)*$limit;

                          }
            else
            {
        $id=1;
   }
   $page=ceil($total/$limit);

   $query=mysqli_query($conn,"select * from form_table limit                                        $start, $limit");
 ?>
 <!DOCTYPE html>
 <html>
 <head>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <link rel="stylesheet"           href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
 <script s             src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js">           </script>
     <script                           src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js">                 </script>
     </head>         
 <body>

<div class="container">
 <h2>Table</h2>
    <table class="table table-bordered">
    <thead>
      <tr>
       <th>Id</th>
         <th>Name</th>
       <th>Gender</th>


<th>Hobbies</th>
<th>Course</th>
 </tr>
</thead>
<tbody>

<?php
  while($ft=mysqli_fetch_array($query))
 {?>
 <tr>
<td><?= $ft['0']?></td>
<td><?= $ft['1']?></td>
<td><?= $ft['2']?></td>
<td><?= $ft['3']?></td>
<td><?= $ft['4']?></td>
  </tr>   
<?php
 }

?>


 </tbody>
  </table>
 <ul class="pagination">
  <?php if($id > 1) {?> <li><a href="?id=<?php echo ($id-1) ?       >">Previous</a></li><?php }?>
  <?php
  for($i=1;$i <= $page;$i++){
   ?>
  <li><a href="?id=<?php echo $i ?>"><?php echo $i;?></a></li>
   <?php
   }
  ?>
   <?php if($id!=$page)

   {?>

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