Php 是否为分页中的表计数行？

在下面的代码中，我对row num有一个问题。这意味着，在分页的每一页中，表中的行都必须从头开始计数。例如，明确规定：

P1：如果我们在分页的第一页，则行是计数：

1 Columns1
2 Columns2
3 Columns3
4 Columns4

1 Columns1
2 Columns2
3 Columns3
4 Columns4

P2：如果我们在分页的第一页，则行是计数：

1 Columns1
2 Columns2
3 Columns3
4 Columns4

1 Columns1
2 Columns2
3 Columns3
4 Columns4

我需要继续将行计数为1234 5678 我正在使用这个代码

$sql = mysql_query("select  *  from (two_make left join two_model on  two_make.make_id = two_model.make_id) left join two_variant on two_model.model_id = two_variant.model_id;");

$nr = mysql_num_rows($sql); 
if (isset($_GET['pn'])) { 
    $pn = preg_replace('#[^0-9]#i', '', $_GET['pn']);  
} else { 
    $pn = 1;
} 
$itemsPerPage = 20; 
$lastPage = ceil($nr / $itemsPerPage);

if ($pn < 1) { 
    $pn = 1; 
} else if ($pn > $lastPage) { 
    $pn = $lastPage; 
} 

$centerPages = "";
$sub1 = $pn - 1;
$sub2 = $pn - 2;
$add1 = $pn + 1;
$add2 = $pn + 2;
if ($pn == 1) {
    $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;';
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> &nbsp;';
} else if ($pn == $lastPage) {
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> &nbsp;';
    $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;';
} else if ($pn > 2 && $pn < ($lastPage - 1)) {
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub2 . '">' . $sub2 . '</a> &nbsp;';
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> &nbsp;';
    $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;';
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> &nbsp;';
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add2 . '">' . $add2 . '</a> &nbsp;';
} else if ($pn > 1 && $pn < $lastPage) {
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> &nbsp;';
    $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;';
    $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> &nbsp;';
}

$limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage; 

$sql2 = mysql_query("select * from (two_make left join two_model on  two_make.make_id = two_model.make_id) left join two_variant on two_model.model_id = two_variant.model_id ORDER BY make ASC $limit"); 

$paginationDisplay = ""; 
if ($lastPage != "1"){

    $paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. '&nbsp;  &nbsp;  &nbsp; ';

    if ($pn != 1) {
        $previous = $pn - 1;
        $paginationDisplay .=  '&nbsp;  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $previous . '"> Back</a> ';
    } 
     $paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>';

    if ($pn != $lastPage) {
        $nextPage = $pn + 1;
        $paginationDisplay .=  '&nbsp;  <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $nextPage . '"> Next</a> ';
    } 
}

$outputList = ''; ?>
<form name="form1" method="POST" action="">
<table width="578" border="1" align="center" id="menu">
<h3 style="color:#68ADD4;"><u>Two Wheeler List</u></h3>
    <tr>
    <th style="color:#68ADD4;">Si.no</th>
    <th style="color:#68ADD4;">Make</th>
    <th style="color:#68ADD4;">Model</th>
    <th style="color:#68ADD4;">Variant</th>
    <th style="color:#68ADD4;">Select</th>
       </tr>

<?php
$i=0;
 while($row=mysql_fetch_array($sql2))
 {
 $i++;
?>
<tr>
    <td><?php echo $i ;?></td>
    <td><?php echo $row['make'];?></td>
    <td><?php echo $row['model'];?></td>
    <td><?php echo $row['variant'];?></td>
    <td><center><input name="checkbox[]" type="checkbox" id="checkbox[]" value="<?php echo $row['variant_id'];?>"></center></td>
</tr>

<?php  } ?> 

而不是echo$i

echo$itemsPerPage*$pn+$i

---

其中$itemsPerpage是每页的项目数，$pn是您的页码

是否有人可以清除我的疑问并跟踪$pn。似乎每次都是一样的。我怀疑你的preg_替换会给你带来预期的结果。现在，它将替换满足以下条件的字符串/字符：按字面意义匹配字符-[^0-9]匹配下表中不存在的单个字符：0-9范围在0到9之间的单个字符-i匹配字符i按字面意义区分大小写$i=0；如果设置$\u GET['pn']{$i=$\u GET['pn']-1*$itemsPerPage+1；$i++我现在已经使用了它，我的错误被修复了，Cho i++；不在问题的代码中，ts已经让他的代码工作了；