我的问题:---
这是我的wifi_log.php文件
<?php // find out how many rows are in the table
$sql = "SELECT COUNT(*) FROM log_wifi";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
$r = mysql_fetch_row($result);
$numrows = $r[0];
// number of rows to show per page
$rowsperpage = 10;
// find out total pages
$totalpages = ceil($numrows / $rowsperpage);
echo $resultpage= $_GET['results_page'];
// get the current page or set a default
if (isset($_GET['currentpage']) && is_numeric($_GET['currentpage'])) {
// cast var as int
$currentpage = (int) $_GET['currentpage'];
} else {
// default page num
$currentpage = 1;
} // end if
// if current page is greater than total pages...
if ($currentpage > $totalpages) {
// set current page to last page
$currentpage = $totalpages;
} // end if
// if current page is less than first page...
if ($currentpage < 1) {
// set current page to first page
$currentpage = 1;
} // end if
// the offset of the list, based on current page
$offset = ($currentpage - 1) * $rowsperpage;
// get the info from the db
$sql = "SELECT * FROM log_wifi LIMIT $offset, $rowsperpage";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
?>
我的数据显示在这里:=
<?php
//while there are rows to be fetched...
while ($row = mysql_fetch_assoc($result))
{
?>
<td><?php echo $row['id']?></td>
<td><?php echo $row['user_id']?></td>
<td><?php echo $row['imei']?></td>
<td><?php echo $row['time_stamp']?></td>
<td><?php echo $row['sending_time']?></td>
<td><?php echo $row['RSSI']?></td>
<td><?php echo $row['BSSID']?></td>
<td><?php echo $row['SSID']?></td>
<td><?php echo $row['sleep_time_start']?></td>
<td><?php echo $row['sleep_time_end']?></td>
</tr>
<?php
} //// end while
?>
这是我的分页,如FIRST&lt;&lt; 1 2 3&gt;最后 - &gt;这是正常的
<tr><th id="footer" colspan="10">
<?php
/****** build the pagination links ******/
// range of num links to show
$range = 3;
if($currentpage==1)
{
echo '<span class="prn"> First <<</span> ';
}
if ($currentpage > 1) {
// show << link to go back to page 1
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1&result_page=$resultpage'>First</a> ";
// get previous page num
$prevpage = $currentpage - 1;
// show < link to go back to 1 page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevpage&result_page=$resultpage'><</a> ";
} // end if
// loop to show links to range of pages around current page
for ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) {
// if it's a valid page number...
if (($x > 0) && ($x <= $totalpages)) {
// if we're on current page...
if ($x == $currentpage) {
// 'highlight' it but don't make a link
echo " <b>$x</b> ";
// if not current page...
} else {
// make it a link
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$x&result_page=$resultpage'>$x</a> ";
} // end else
} // end if
} // end for
// if not on last page, show forward and last page links
if ($currentpage != $totalpages) {
// get next page
$nextpage = $currentpage + 1;
// echo forward link for next page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextpage&result_page=$resultpage'>></a> ";
// echo forward link for lastpage
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalpages&result_page=$resultpage'>Last</a> ";
} // end if
else
{
echo '<span class="prn"> Last >></span> ';
}
/****** end build pagination links ******/
?>
问题在这里如何做到我知道
<form action="./wifi_log.php" method="get">
<select name="results_page" id="results_page" onchange="this.form.submit();" >
<option value="5" NO >5</option>
<option value="10" SELECTED >10</option>
<option value="20" NO>20</option>
<option value="50" NO >50</option>
</select>
results per page
</form></th>
</tr>
</tbody>
</table>
答案 0 :(得分:2)
您的表单方法已获取。 你可以替换
$rowsperpage = 10;
与
$rowsperpage = isset($_GET['results_page']) && is_numeric($_GET['results_page']) ? $_GET['results_page'] : 10;
答案 1 :(得分:1)
你已经有一个变量来完成这项工作。您只需要从正在发送的$ _POST变量中填充它。
// number of rows to show per page
if(isset($_GET['results_page']) && is_numeric($_GET['results_page']))
{
$rowsperpage = (int)$_GET['results_page'];
}
else
{
$rowsperpage = 10;
}
答案 2 :(得分:0)
这是我最后的分页编码:
// number of rows to show per page
//$rowsperpage = 10; //I COMMENTED THIS AND WRITEN FOLLOWING
/***********************************************************/
if(isset($_GET['results_page']) && is_numeric($_GET['results_page']))
{
$rowsperpage = (int)$_GET['results_page'];
}
else
{
$rowsperpage = 10;
}
/************************************************************/
// find out total pages
$totalpages = ceil($numrows / $rowsperpage);
echo $resultpage= $_GET['results_page'];
// get the current page or set a default
if (isset($_GET['currentpage']) && is_numeric($_GET['currentpage'])) {
// cast var as int
$currentpage = (int) $_GET['currentpage'];
} else {
// default page num
$currentpage = 1;
} // end if
// if current page is greater than total pages...
if ($currentpage > $totalpages) {
// set current page to last page
$currentpage = $totalpages;
} // end if
// if current page is less than first page...
if ($currentpage < 1) {
// set current page to first page
$currentpage = 1;
} // end if
// the offset of the list, based on current page
$offset = ($currentpage - 1) * $rowsperpage;
// get the info from the db
$sql = "SELECT * FROM log_wifi LIMIT $offset, $rowsperpage";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
这是我的记录显示
//while there are rows to be fetched...
while ($row = mysql_fetch_assoc($result))
{
?>
<td><?php echo $row['id']?></td>
<td><?php echo $row['user_id']?></td>
<td><?php echo $row['imei']?></td>
<td><?php echo $row['time_stamp']?></td>
<td><?php echo $row['sending_time']?></td>
<td><?php echo $row['RSSI']?></td>
<td><?php echo $row['BSSID']?></td>
<td><?php echo $row['SSID']?></td>
<td><?php echo $row['sleep_time_start']?></td>
<td><?php echo $row['sleep_time_end']?></td>
</tr>
<?php
} //// end while
而且这是我在链接和组合框中的分页
/****** build the pagination links ******/
// range of num links to show
$range = 3;
if($currentpage==1)
{
echo '<span class="prn"> First <<</span> ';
}
if ($currentpage > 1) {
// show << link to go back to page 1
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1&results_page=$rowsperpage'>First</a> ";
// get previous page num
$prevpage = $currentpage - 1;
// show < link to go back to 1 page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevpage&results_page=$rowsperpage'><</a> ";
} // end if
// loop to show links to range of pages around current page
for ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) {
// if it's a valid page number...
if (($x > 0) && ($x <= $totalpages)) {
// if we're on current page...
if ($x == $currentpage) {
// 'highlight' it but don't make a link
echo " <b>$x</b> ";
// if not current page...
} else {
// make it a link
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$x&results_page=$rowsperpage'>$x</a> ";
} // end else
} // end if
} // end for
// if not on last page, show forward and last page links
if ($currentpage != $totalpages) {
// get next page
$nextpage = $currentpage + 1;
// echo forward link for next page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextpage&results_page=$rowsperpage'>></a> ";
// echo forward link for lastpage
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalpages&results_page=$rowsperpage'>Last</a> ";
} // end if
else
{
echo '<span class="prn"> Last >></span> ';
}
/****** end build pagination links ******/
?>
<form action="./wifi_log.php" method="get">
<select name="results_page" id="results_page" onchange="this.form.submit();" >
<option value="5" NO >5</option>
<option value="10" SELECTED >10</option>
<option value="20" NO>20</option>
<option value="50" NO >50</option>
</select>
results per page
</form>
开心:)