分页：如何通过选择提交移动到下一页

Question

我有一个名为 Quizes.php 的主页，其中包含一个显示页面列表的分页脚本，即 [1][2][3]..... 我的代码与包含链接的<a href ....> 一起工作正常到“下一个”、“上一个”、“最后一个”和“第一个”，但在 '<form method="get" action="?page=".$next."" >'; 提交按钮不起作用。看起来action="?page=".$next.""是错误的。那么最好的方法是什么？

我也遇到了这些链接 PHP: Pagination with submit button ， Submit form in a displaytag pagination 和其他但没有帮助。

<?php

                $page = $_GET['page'];

                if($page == ""){

                    $page = "1";

                }else{

                    // If page is set, let's get it
                    $page = $_GET['page'];

                }

                // Now lets get all messages from your database
                $sql = "SELECT * FROM quizes";
                $query = mysql_query($sql);

                // Lets count all messages
                $num = mysql_num_rows($query);

                // Lets set how many messages we want to display
                $per_page = "2";

                // Now we must calculate the last page
                $last_page = ceil($num/$per_page);

                echo 's', $num;

                // And set the first page
                $first_page = "1";

                // Here we are making the "First page" link
                echo "<a href='?page=".$first_page."'>First page</a> ";

                // If page is 1 then remove link from "Previous" word
                if($page == $first_page){

                    echo "Previous ";

                }else{

                    if(!isset($page)){

                        echo "Previous ";

                    }else{

                        // But if page is set and it's not 1.. Lets add link to previous word to take us back by one page
                        $previous = $page-1;

                        echo "<a href='?page=".$previous."'>Previous</a> ";

                    }

                }

                // If the page is last page.. lets remove "Next" link
                if($page == $last_page){

                    echo "Next ";   

                }else{

                    // If page is not set or it is set and it's not the last page.. lets add link to this word so we can go to the next page
                    if(!isset($page)){

                        $next = $first_page+1;
                        echo "<a href='?page=".$next."'>Next</a> ";

                    }else{

                        $next = $page+1;
                        echo "<a href='?page=".$next."'>Next</a> ";

                    }

                }

                // And now lets add the "Last page" link
                echo "<a href='?page=".$last_page."'>Last page</a>";

                // Math.. It gets us the start number of message that will be displayed
                $start = ($page-1)*$per_page;

                // Now lets set the limit for our query
                $limit = "LIMIT $start, $per_page";

                // It's time for getting our messages
                $sql = "SELECT * FROM quizes $limit";

                $query = mysql_query($sql);

                echo "<br /><br />";

                // And lets display our messages

                $i=0;
                while($row = mysql_fetch_array($query) or die(mysql_error())){
                $a= $row['A'];
                echo '<form method="get" action="?page=".$next."" >'; // is that correct way?????
                    while ($row=mysql_fetch_array($query))
                    {

                    echo '<div class="boxed" >';

                    echo "\t".'<tr><th>'.
                    $row['question']."<br>".
                    '</th><th>'."<input type='radio' name= '.$i' value='{$row['A']}'>".$row['A']."<br>".
                    '</th><th>'."<input type='radio' name='.$i' value='{$row['B']}'>".$row['B']."<br>".
                    '</th><th>'."<input type='radio' name='.$i' value='{$row['C']}'>".$row['C']."<br>".
                    '</th><th>'."<input type='radio' name='.$i' value='{$row['D']}'>".$row['D'].'</th>
                    </tr>';
                //  echo '<input type="hidden" name="page" value="">';
                    echo '<input type="submit" name="submit"/>';
                    $i++;

            echo '</div>';

                        echo '</div>';
                    }
                echo '</form>';
                }



                  ?>

请帮帮我。

Answer 1

Get 方法在你想要的 url 中发送数据。您不需要在操作中发送数据，否则将输入字段命名为 page 并将其值设置为页码。这样你提交的时候，数据就会按照你想要的方式提交 用这个替换你的while循环

while($row = mysql_fetch_array($query) or die(mysql_error())){
            $a= $row['A'];
            echo '<form method="get">'; 
                while ($row=mysql_fetch_array($query))
                {

                echo '<div class="boxed" >';

                echo "\t".'<tr><th>'.
                $row['question']."<br>".
                '</th><th>'."<input type='radio' name= '.$i' value='{$row['A']}'>".$row['A']."<br>".
                '</th><th>'."<input type='radio' name='.$i' value='{$row['B']}'>".$row['B']."<br>".
                '</th><th>'."<input type='radio' name='.$i' value='{$row['C']}'>".$row['C']."<br>".
                '</th><th>'."<input type='radio' name='.$i' value='{$row['D']}'>".$row['D'].'</th>
                </tr>';
                echo '<input type="hidden" name="page" value="'.$next.'">';
                echo '<input type="submit" name="submit"/>';
                $i++;

        echo '</div>';

                    echo '</div>';
                }
            echo '</form>';
            }

答案已更新

Answer 2

看起来像是语法错误。

试试：

echo '<form method="get" action="?page='.$next.'">';

在.$next. 周围加上单引号，因为您在echo 中使用了单引号。如果使用双引号，它会关闭 action 属性（解释为 javascript，而不是 PHP）。

另外，您可以查看您的 PHP 错误日志。

Answer 3

 <?php
 //before you begin - try to know how get works
 //clean your code a bit, by mentioning form outside of while loop
 //you almost get everything in print_r($_GET); after submit
 //i think its better to attach data you get(value from radios,textfields) with that of the current page value(page=1)
 //page - a tag - page = 1
 //$string = "option1=a";
 //$page = 1;
 //finalstring = $string.'&'.page=$page;
 //url - To next a tags http://example.com/$finalstring
 ?>
 <form action='Quizes.php' method='GET'>
 <?php
      $i = 0;
      //test case
      while($i <= 5){
           echo '<div class="boxed">';     
           echo "<input type='radio' name= 'ans[]' value='$i' $checked > $i";
           echo '</div>';
           $i++;
      }

 ?>
 <input type='submit' name='submit' value='submit'/>
 </form>