Home Backend Development PHP Tutorial 如何把查询和分页一起实现

如何把查询和分页一起实现

Jun 13, 2016 am 11:54 AM
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怎么把查询和分页一起实现

本帖最后由 u014474944 于 2014-04-04 20:14:27 编辑 查询 和 分页都能实现 就是不知道怎么把两个合在一起 
代码如下
<br />$page=isset($_GET['page'])?$_GET['page']:1; <br />$pagesize=20; <br />$sql="SELECT count(*) from khxx";<br />$res=mysql_query($sql);<br />$maxrows=mysql_result($res,0,0);<br />$maxpages=ceil($maxrows/$pagesize);<br />if($page>$maxpages){<br />	$page=$maxpages;}<br />if($page<1){<br />	$page=1;}<br />$limit=" limit ".(($page-1)*$pagesize).",{$pagesize}";<br /><br />if (!empty($_GET[keys])) {<br />			$keys=$_GET['keys'];<br />			$ww="`dates` like '%".$keys."%' or `area` like '%".$keys."%' ;<br />			$wh="where {$ww}";<br />		}<br />
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<br />		<form action="khall.php" method="get"><br />			<input class="inp" type="text" name="keys"/ ><br />			<input class="sub" type="submit" value="查询"/><br />		</form><br />			</tr><br />			<tr><br />			<?php echo "当前{$page}/{$maxpages}页 共计{$maxrows}条";<br />					  echo "<a href='khall.php?page=1'>首页</a>";<br />					  echo "<a href='khall.php?page=".($page-1)."'>上一页</a>";<br />					  echo "<a href='khall.php?page=".($page+1)."'>下一页</a>";<br />					  echo "<a href='khall.php?page={$maxpages}'>末页</a>";<br />				?><br />                       </tr><br />
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<?php<br />			<br />			$sql="SELECT * FROM `khxx` {$wh} order by id desc {$limit}";<br />			$query=mysql_query($sql);<br />			while ($rs=mysql_fetch_array($query)){<br />		?><br /><br />
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------解决方案--------------------
还要怎么整合?
sql查询的就是当前页的内容。也就是说,你只需要把当前页查询出来的内容展示出来,然后编好页码就行了。
------解决方案--------------------
<br /><?php<br />$page=isset($_GET['page'])?$_GET['page']:1; <br />$pagesize=20; <br /><br />if (!empty($_GET[keys])) {<br />   $keys=$_GET['keys'];<br />   $ww="`dates` like '%".$keys."%' or `area` like '%".$keys."%' ";<br />   $wh="where {$ww}";<br />}else{<br />    $wh = ""<br />}<br /><br />$sql="SELECT count(*) from khxx ".$wh; // 计算总数时加入搜索条件 <br />$res=mysql_query($sql);<br />$maxrows=mysql_result($res,0,0);<br />$maxpages=ceil($maxrows/$pagesize);<br />if($page>$maxpages){<br />    $page=$maxpages;}<br />if($page<1){<br />    $page=1;}<br />$limit=" limit ".(($page-1)*$pagesize).",{$pagesize}";<br /><br />// 查询当前页记录 <br />$sql="SELECT * FROM `khxx` {$wh} order by id desc {$limit}";<br />$query=mysql_query($sql);<br />while ($rs=mysql_fetch_array($query)){<br /><br />?><br />
Copy after login
Copy after login

------解决方案--------------------
你得把搜索的字段 写进URL里面 然后传参 那样才行吧
------解决方案--------------------
你的翻页条中没有附加查询条件
------解决方案--------------------
引用:
Quote: 引用:

你得把搜索的字段 写进URL里面 然后传参 那样才行吧

就是不知道怎么写 没思路


echo "<a href='khall.php?keys=$_GET['keys']&page=".($page-1)."'>上一页</a>";
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你把分页URL上都加上 这个 查询字段 应该就可以了
------解决方案--------------------
引用:
Quote: 引用:

<br /><?php<br />$page=isset($_GET['page'])?$_GET['page']:1; <br />$pagesize=20; <br /><br />if (!empty($_GET[keys])) {<br />   $keys=$_GET['keys'];<br />   $ww="`dates` like '%".$keys."%' or `area` like '%".$keys."%' ";<br />   $wh="where {$ww}";<br />}else{<br />    $wh = ""<br />}<br /><br />$sql="SELECT count(*) from khxx ".$wh; // 计算总数时加入搜索条件 <br />$res=mysql_query($sql);<br />$maxrows=mysql_result($res,0,0);<br />$maxpages=ceil($maxrows/$pagesize);<br />if($page>$maxpages){<br />    $page=$maxpages;}<br />if($page<1){<br />    $page=1;}<br />$limit=" limit ".(($page-1)*$pagesize).",{$pagesize}";<br /><br />// 查询当前页记录 <br />$sql="SELECT * FROM `khxx` {$wh} order by id desc {$limit}";<br />$query=mysql_query($sql);<br />while ($rs=mysql_fetch_array($query)){<br /><br />?><br />
Copy after login
Copy after login

效果和我写的差不多 
我写的有个问题就是 点下一页后 当前的查询状态就消失了 想问下 怎么写才可以把查询加入到分页

那你需要在翻頁的url中加入条件参数,例如下一页需要这样写
echo "下一页";
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