如何在此代码中进行分页? [英] how to do pagination in this code?

问题描述

<?php
        include("config/connection.php");
        $qry="SELECT * FROM `students_info`";
        $qry_sel=mysqli_query($con,$qry);
            echo "<table border='2'>";
            echo"<tr>";
            echo "<td>SL_NO</td>";
            echo "<td>NAME</td>";
            echo "<td>ROLL</td>";
            echo "<td>COLLEGE_ID</td>";
            echo "<td>CLASS</td>";
            echo "<td>STATUS</td>";

            echo "</tr>";
            while($row=mysqli_fetch_array($qry_sel))
            {
                echo "<tr>";
                $slno=$row['sl_no'];
                echo "<td>".$row['sl_no']."</td>";
                echo "<td>".$row['name']."</td>";
                echo "<td>".$row['roll']."</td>";
                echo "<td>".$row['clgid']."</td>";
                echo "<td>".$row['class']."</td>";
                echo "<td><a href='delete.php?id=$slno'>DELETE</a><a href='edit.php?id=$slno'>!!EDIT</a></td>";

                //echo"<td>"."<a href='delete.php?del=".$id."'>Delete</a>"."</td>";
                echo "</tr>";
            }
            echo"</table>";



?>

推荐答案

以下步骤将指导您如何在现有代码中实现和合并分页.

The following steps will guide you on how to implement and incorporate pagination in your existing code.

• 转到 https://github.com/rajdeeppaul/Pagination ，下载文件，并将其包含在您的项目目录中，如下所示:

• Go to https://github.com/rajdeeppaul/Pagination, download pagination.php file and include it into your project directory, like this:

require_once('pagination.php');

使用适当的驱动程序创建Pagination类的实例，如下所示:

Create an instance of Pagination class, with appropriate driver, like this:

$pg = new Pagination('mysqli', 'HOSTNAME', 'USERNAME', 'PASSWORD', 'DATABASE_NAME');

根据您的数据库凭据更改HOSTNAME，USERNAME，PASSWORD和DATABASE_NAME.

Change HOSTNAME, USERNAME, PASSWORD and DATABASE_NAME as per your database credentials.

使用setPaginationParameters()方法设置分页参数，如下所示，

Set pagination parameters using setPaginationParameters() method, like this,

$pg->setPaginationParameters(10, 5);

调用Pagination类的getResult()方法以显示基于URL查询?page=X的行，像这样

Call getResult() method of Pagination class to display rows based on the URL query ?page=X, like this,

$resultSet = $pg->getResult('SELECT * FROM students_info', NULL, $_GET, 'page');

foreach($resultSet as $row){
    echo "<tr>";
        $slno=$row['sl_no'];
        echo "<td>".$row['sl_no']."</td>";
        echo "<td>".$row['name']."</td>";
        echo "<td>".$row['roll']."</td>";
        echo "<td>".$row['clgid']."</td>";
        echo "<td>".$row['class']."</td>";
        echo "<td><a href='delete.php?id=" . $slno . "'>DELETE</a><a href='edit.php?id=" . $slno . "'>!!EDIT</a></td>";
    echo "</tr>";
}

最后，使用getPaginationLinks()方法显示分页链接，像这样

Finally, display pagination links using getPaginationLinks() method, like this,

$pgLinks = $pg->getPaginationLinks();
if(is_array($pgLinks) && count($pgLinks) && $pgLinks['prev']){
    /* previous pages are available */
    echo '« ';
}
if(is_array($pgLinks) && count($pgLinks) && count($pgLinks['links'])){
    /* show pagination links */
    foreach($pgLinks['links'] as $link){
        echo '<a href="yourPage.php?page='.$link.'">'.$link.'</a> ';
    }
}
if(is_array($pgLinks) && count($pgLinks) && $pgLinks['next']){
    /* next pages are available */
    echo '&raquo;';
}

注意:不要忘记在页面上更改yourPage.php.

Note: Don't forget to change yourPage.php with your page.

以下是完整的代码:

<?php
    require_once('pagination.php');

    $pg = new Pagination('mysqli', 'HOSTNAME', 'USERNAME', 'PASSWORD', 'DATABASE_NAME');
    $pg->setPaginationParameters(10, 5);

    $resultSet = $pg->getResult('SELECT * FROM students_info', NULL, $_GET, 'page');

    echo "<table border='2'>";
        echo"<tr>";
        echo "<td>SL_NO</td>";
        echo "<td>NAME</td>";
        echo "<td>ROLL</td>";
        echo "<td>COLLEGE_ID</td>";
        echo "<td>CLASS</td>";
        echo "<td>STATUS</td>";

        echo "</tr>";
        foreach($resultSet as $row){
            echo "<tr>";
                $slno=$row['sl_no'];
                echo "<td>".$row['sl_no']."</td>";
                echo "<td>".$row['name']."</td>";
                echo "<td>".$row['roll']."</td>";
                echo "<td>".$row['clgid']."</td>";
                echo "<td>".$row['class']."</td>";
                echo "<td><a href='delete.php?id=" . $slno . "'>DELETE</a><a href='edit.php?id=" . $slno . "'>!!EDIT</a></td>";
            echo "</tr>";
        }

        $pgLinks = $pg->getPaginationLinks();
        echo "<tr style='text-align:center;'><td colspan='6'>"; 
        if(is_array($pgLinks) && count($pgLinks) && $pgLinks['prev']){
            /* previous pages are available */
            echo '&laquo; ';
        }
        if(is_array($pgLinks) && count($pgLinks) && count($pgLinks['links'])){
            /* show pagination links */
            foreach($pgLinks['links'] as $link){
                echo '<a href="yourPage.php?page='.$link.'">'.$link.'</a> ';
            }
        }
        if(is_array($pgLinks) && count($pgLinks) && $pgLinks['next']){
            /* next pages are available */
            echo '&raquo;';
        }
        echo "</td></tr>";
    echo"</table>";
?>

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脚注::如果需要进一步说明此脚本的用法，请阅读用法文档.

---

Footnotes: Go through the Usage documentation if you need any further clarification on the usage of this script.

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