Question

正如标题所说，我想从我的分页系统中隐藏一些页面。因为它从中选择的表非常大，所以它创建了数千个数字。

所以我想要它就像第一页1 2 3 4 ...最后一页

如果我点击页面，它应该显示这个第一页1 2 3 4 5 6 7 8 ...最后一页

如果我点击第8页，它应该显示这一点首页... 4 5 6 7 8 9 10 11 ...最后一页

所以这是我的php分页脚本

<!DOCTYPE html>
<html>
  <head>
    <title>PHP Pagination</title>
  </head>
<body>
    <table align="center" border="2" cellpadding="3">
        <tr>
            <th>Name</th>
            <th>quality</th>
            <th>RequiredLevel</th>
        </tr>
        <?php
            $con = mysqli_connect('127.0.0.1', 'root', 'ascent', 'world');

            $per_page=500;

            if (isset($_GET["page"])) {
                $page = $_GET["page"];
            }else{
                $page=1;
            }

            $start_from = ($page-1) * $per_page;

            $stmt = $con->prepare("SELECT name, Quality, RequiredLevel  FROM item_template LIMIT $start_from, $per_page");

            $stmt->execute();

            $stmt->bind_result($name, $quality, $reqlvl);

            $stmt->store_result();

            while($stmt->fetch()) {

                if($stmt->num_rows > 0) {
                    echo "<tr align='center'>";
                    echo "<td>$name</td>";
                    echo "<td>$quality</td>";
                    echo "<td>$reqlvl</td>";
                    echo "</tr>";
                }
            }
        ?>
    </table>
    <div>
        <?php
            $stmt = $con->prepare("SELECT * FROM item_template");

            $stmt->execute();


            $stmt->store_result();

            if($stmt->num_rows > 0) {
                $total_records = $stmt->num_rows;
                $total_pages = ceil($total_records / $per_page);

                echo "<center><a href='index.php?page=1'>First Page</a>";

                for ($i=1; $i<=$total_pages; $i++) {
                    if($page < 4)
                    echo "<a href='index.php?page=$i'>$i</a> ";
                }

                echo "<a href='index.php?page=$total_pages'>Last Page</a></center> ";       
            }
        ?>
    </div>
</body>
</html>

Answer 1

您的分页问题的解决方案是这样的：

使用超全球$_GET，

获取当前页码

// current page
$current_page = isset($_GET['page']) ? $_GET['page'] : 1;

查找页面的超集范围，例如1-10或1-20等。例如，如果$total_pages = 30，则此超集范围将为1-30。此步骤的代码如下：
```
// superset range of pages
$superset_range = range(1, $total_pages);
```

找到要显示的子页范围，例如1-7或3-9等。例如，如果$total_pages = 30则此子集范围为1-7或3-9，或者6-12等，它可以是1到30之间的任何连续七页。此外，必要时调整此范围。此步骤的代码如下：

// subset range of pages to display
$subset_range = range($current_page - 3, $current_page + 3);

// adjust the range(if required)
foreach($subset_range as $p){
    if($p < 1){
        array_shift($subset_range);
        if(in_array($subset_range[count($subset_range) - 1] + 1, $superset_range)){
            $subset_range[] = $subset_range[count($subset_range) - 1] + 1;
        }
    }elseif($p > $total_pages){
        array_pop($subset_range);
        if(in_array($subset_range[0] - 1, $superset_range)){
            array_unshift($subset_range, $subset_range[0] - 1);
        }
    }
}

最后，相应地显示分页链接和点。此步骤的代码如下：

// display intermediate pagination links
if($subset_range[0] > $superset_range[0]){
    echo " ...&nbsp;";
}
foreach($subset_range as $p){
    echo "<a href='index.php?page=$p'>$p</a>";

}
if($subset_range[count($subset_range) - 1] < $superset_range[count($superset_range) - 1]){
    echo "&nbsp;... ";
}

所以，这是完整代码：

// your code

$stmt = $con->prepare("SELECT * FROM item_template");
$stmt->execute();
$stmt->store_result();

if($stmt->num_rows > 0) {
    $total_records = $stmt->num_rows;
    $total_pages = ceil($total_records / $per_page);

    if($total_records > $per_page){
        echo "<center><a href='index.php?page=1'>First Page</a> ";

        // current page
        $current_page = isset($_GET['page']) ? $_GET['page'] : 1;

        // Superset range of pages
        $superset_range = range(1, $total_pages);

        // subset range of pages to display
        $subset_range = range($current_page - 3, $current_page + 3);

        // adjust the range(if required)
        foreach($subset_range as $p){
            if($p < 1){
                array_shift($subset_range);
                if(in_array($subset_range[count($subset_range) - 1] + 1, $superset_range)){
                    $subset_range[] = $subset_range[count($subset_range) - 1] + 1;
                }
            }elseif($p > $total_pages){
                array_pop($subset_range);
                if(in_array($subset_range[0] - 1, $superset_range)){
                    array_unshift($subset_range, $subset_range[0] - 1);
                }
            }
        }

        // display intermediate pagination links
        if($subset_range[0] > $superset_range[0]){
            echo " ...&nbsp;";
        }
        foreach($subset_range as $p){
            echo "<a href='index.php?page=$p'>$p</a>";

        }
        if($subset_range[count($subset_range) - 1] < $superset_range[count($superset_range) - 1]){
            echo "&nbsp;... ";
        }

        echo " <a href='index.php?page=$total_pages'>Last Page</a></center> ";  
    }    
}

用sql隐藏php分页系统中的一些页面

1 个答案: