我正在尝试搜索数据后进行分页。在第一页数据显示，但如果点击下一页或页码，则不显示任何内容。如果回到第一页，那么数据也会消失。请帮我解决这个问题。
由于
<FORM NAME="form1" METHOD="post" ACTION="">
<input type="text" name="university" value="" class="bgnone" >
<input name="search" value="search" class="bgnone" type="submit" ></SPAN>
</form>
<?php
include('connect.php');
$number=0;
if($_POST['search']){
$uni=$_POST['university'];
$per_page =10;
$page_num = 1;
if(isset($_GET['page'])){
if(is_numeric($_GET['page']))
$page_num = $_GET['page'];
}
$start = ($page_num-1)*$per_page;
$id=$_GET['id'];
$result = mysql_query("SELECT * FROM person where university = '$uni'");
/* $row_num = mysql_num_rows($result1);*/
$result_search= mysql_query(
"SELECT * FROM person where university = '$uni' order by id desc limit $start, $per_page");
$row_num = mysql_num_rows($result);
$max_pages = ceil($row_num / $per_page);
if(!$start){
$start = 0;
}
?>
<table>
<tr>
<td>Name </td>
<td>Email</td>
<td>Address</td>
<td>Phone</td>
</tr>
<?php
while($row_prev= mysql_fetch_array($result_search)){
?>
<TR>
<TD BGCOLOR="#FFFFCC" CLASS="n12" WIDTH=130><?php echo $row_prev['name'] ;?></TD>
<TD BGCOLOR="#99FF66" ROWSPAN="2" NOWRAP CLASS="n12"> <?php echo $row_prev['email'] ;?></TD>
<TD BGCOLOR="#99FF66" NOWRAP CLASS="n12"><?php echo $row_prev['address'] ;?></TD>
<TD BGCOLOR="#FFFFCC" CLASS="n12" WIDTH=140><?php echo $row_prev['phone'] ;?></TD>
</TR>
<?php } ?>
</table>
<?php
$previous = $page_num - 1;
$next = $page_num + 1;
?>
<div id="pagination">
<div id="firstpage">
<?php if($previous <= 0) { echo "<strong>First</strong>";}
else {echo "<a href='search.php?page=1'>First</a>";}
?>
</div>
<div id="previous">
<?php if($previous <= 0) { echo "<strong>Previous</strong>";}
else { echo "<a href='search.php?page=$previous'>Previous</a>"; }
?></div>
<div id="pagenumber" >
<?php
for($i=1; $i<=$max_pages; $i++)
{
echo "<a href='search.php?page=$i'>$i | </a>";
}
?>
</div>
<div id="next">
<?php
if($next > $max_pages) { echo "<strong>Next</strong>";}
else {echo "<a href='search.php?page=$next'>Next</a>";}
?></div>
<div id="last">
<?php
if($next > $max_pages){ echo "<strong>Last</strong>";}
else {echo "<a href='search.php?page=$max_pages'>Last</a>";}
?></div>
</div>
<?php } ?>
答案 0 :(得分：1)
请仔细检查完整的代码：
<FORM NAME="form1" METHOD="get" ACTION="">
<input type="text" name="university" value="" class="bgnone" >
<input name="search" value="search" class="bgnone" type="submit" >
</SPAN>
</form>
<table height="200px" style="border:3px black solid;border-radius:5px" width="550px">
<tr>
<th colspan="2" height="40px" style="border-bottom:3px black solid">User Name</th>
</tr>
<?php
if(isset($_GET['university'])){
$uni=$_GET['university'];
$link=mysql_connect("localhost","root","");
mysql_select_db("dbname",$link);
$q="select count(*) \"total\" from tablename where firstname='".$uni."'";
$ros=mysql_query($q,$link) or die(mysql_error());
$row=mysql_fetch_array($ros);
$total=$row['total'];
$dis=4;
$total_page=ceil($total/$dis);
$page_cur=(isset($_GET['page']))?$_GET['page']:1;
$k=($page_cur-1)*$dis;
$q="select * from tablename where firstname='".$uni."' limit $k,$dis";
//echo "select * from tablename where firstname='".$uni."' limit $k,$dis";die;
$ros=mysql_query($q,$link);
while($row=mysql_fetch_array($ros))
{
echo '<tr>';
echo '<td width="10px" style="border-bottom:1px #a1a1a1 solid">'.$row['id'].'.';
echo '<td style="border-bottom:1px #a1a1a1 solid">'.$row['firstname'];
echo '</tr>';
}
echo '</table>';
echo '<br/>';
if($page_cur>1)
{
echo '<a href="paging-ex.php?page='.($page_cur-1).'&university='.$uni.'" style="cursor:pointer;color:green;" ><input style="cursor:pointer;background-color:green;border:1px black solid;border-radius:5px;width:120px;height:30px;color:white;font-size:15px;font-weight:bold;" type="button" value=" Previous "></a>';
}
else
{
echo '<input style="background-color:green;border:1px black solid;border-radius:5px;width:120px;height:30px;color:black;font-size:15px;font-weight:bold;" type="button" value=" Previous ">';
}
for($i=1;$i<$total_page;$i++)
{
if($page_cur==$i)
{
echo ' <input style="background-color:green;border:2px black solid;border-radius:5px;width:30px;height:30px;color:black;font-size:15px;font-weight:bold;" type="button" value="'.$i.'"> ';
}
else
{
echo '<a href="paging-ex.php?page='.$i.'&university='.$uni.'"> <input style="cursor:pointer;background-color:green;border:1px black solid;border-radius:5px;width:30px;height:30px;color:white;font-size:15px;font-weight:bold;" type="button" value="'.$i.'"> </a>';
}
}
if($page_cur<$total_page)
{
echo '<a href="paging-ex.php?page='.($page_cur+1).'&university='.$uni.'"><input style="cursor:pointer;background-color:green;border:1px black solid;border-radius:5px;width:90px;height:30px;color:white;font-size:15px;font-weight:bold;" type="button" value=" Next "></a>';
}
else
{
echo '<input style="background-color:green;border:1px black solid;border-radius:5px;width:90px;height:30px;color:black;font-size:15px;font-weight:bold;" type="button" value=" Next ">';
}
}
?>
</table>
答案 1 :(得分：0)
最好更换以下内容
if(is_numeric($_GET['page']))
$page_num = $_GET['page'];
}
通过
$page_num = int($_GET['page']);
答案 2 :(得分：0)
那么，为了让您的SQL查询正常运行，您需要$_POST['search']为true而$uni = $_POST['university']为非空，对吧？目前，没有任何信息通过点击下一页或页码传递给您的search.php。
因此，您可能希望将分页<a>标记更改为以下内容：
<a href='search.php?page=$next&university=$uni&search=true'>Next</a>
并替换代码的顶部以使用$_REQUEST：
if($_REQUEST['search']){
$uni=$_REQUEST['university'];
....
希望有所帮助。