PHP之分页显示数据-资讯系统

PHP之分页显示数据-新闻系统

一、项目设计

1.项目要求

2.主页面使用frame框架进行设计，内容如下：

   index.php

<span style="font-family:SimSun;font-size:18px;"><frameset rows="80%，20%" frameborder="no" border="0" cols="900px">	<frameset cols="10%,80%,10%">		<frame src="sidebar.php" name="sidebar" noresize scrolling="no">		<frameset rows="20%,80%">			<frame src="navigationbar.php" name="navigation" noresize scrolling="no">			<frame src="home.php" name="content" noresize scrolling="yes">		</frameset>		<frame src="sidebar.php" name="sidebar" noresize scrolling="no">	</frameset>	<frame src="footer.php" name="footer">
</frameset></span>

二、准备工作

1.创建项目文件夹，定义配信息

   文件夹名称：news

   配置文件名：config.php

<span style="font-size:18px;"><?php define("HOST","localhost");	define("USERNAME","root");	define("PASSWORD","");	define("CHARSET","utf8");?></span>

2..创建项目数据库

   create_db.php

<span style="font-size:18px;"><!--执行该页面用于创建一个数据库-->			<meta http-equiv="content-Type" content="text/html;charset=utf-8">		<title>创建数据库</title>			<?php require_once &#39;config.php&#39;;		$conn=mysql_connect(HOST,USERNAME,PASSWORD);		if(!$conn)			die(&#39;Coucld not connect:&#39;.mysql_error());		$result=mysql_query("CREATE DATABASE news default character set utf8");		if($result)		{			echo "Database create successful!";		}else		{			die(&#39;Could not connect:&#39;.mysql_error());		}		mysql_close($conn);	?>	</span>

3.设计数据表，并创建数据表

     强烈建议，在创建数据表之前，一定要先设计好数据表，并反复思量，是否有问题。

     create_table.php

<span style="font-size:18px;"><!--执行该页面用于创建数据表-->			<meta http-equiv="content-Type" content="text/html;charset=utf-8">		<title>创建数据表</title>				<?php require_once &#39;config.php&#39;;			$conn = mysql_connect(HOST,USERNAME, PASSWORD);			mysql_query("set names utf8");			if (!$conn){				die(&#39;Could not connect:&#39;.mysql_error());			}			mysql_select_db("news");						#分页表格-数据表			$sql = "CREATE TABLE content(				id int primary key auto_increment,				name varchar(30),				age varchar(12)			)";			#统计页面浏览次数-数据表			$sql2 ="CREATE TABLE count_number(					id int primary key auto_increment,				content_id	int,				number int,				is_first varchar(10)			)";			$sql3="insert into count_number(content_id,number,is_first) values(100,0,&#39;true&#39;)";			#mysql_query($sql2);			#mysql_query($sql3);						/*				创建新闻主体表，字段解释				id 主键				news_id	新闻的标识，通过该id可以找到新闻的详情				image	新闻的图片				title	新闻的标题			*/			$sql4 = "create table news_content(				id int primary key auto_increment,				news_id int ,				image varchar(150),				title varchar(150),				content varchar(150)			)ENGINE=MyISAM DEFAULT CHARSET=utf8";						/*				插入新闻内容			*/			$sql5 = "insert into news_content(news_id,image,title,content) values(				1001,				&#39;http://img1.cache.netease.com/catchpic/9/9E/9E3EC2A48299CBD7AD007DFF54060EE9.jpg&#39;,				&#39;人民日报梳理习近平这一年：累并快乐着&#39;,				&#39;http://news.163.com/14/1211/08/AD5URVP800014SEH.html&#39;)";			$sql6 = "insert into news_content(news_id,image,title,content) values(				1002,				&#39;http://img1.cache.netease.com/catchpic/8/86/86394708E37A7B759771855337792EED.jpg&#39;,				&#39;香港警方今日将全面清障 \"占中\"者内部发生分歧&#39;,				&#39;http://news.163.com/14/1211/00/AD53FEM900014JB6.html&#39;)";			$sql7 = "insert into news_content(news_id,image,title,content) values(				1003,				&#39;http://img4.cache.netease.com/cnews/2014/12/10/2014121019041607f5e.jpg&#39;,				&#39;太原市委组织部长李志江被调查 曾\"失踪\"14天&#39;,				&#39;http://news.163.com/14/1211/02/AD5BFC5700014AED.html&#39;)";			$sql8="insert into news_content(news_id,image,title,content) values(				1004,				&#39;http://img1.cache.netease.com/catchpic/B/BB/BB09886F9B84329626E13115159CB164.jpg&#39;,				&#39;媒体揭秘中情局八大酷刑 花8000万美元请人设计&#39;,				&#39;http://news.163.com/14/1211/02/AD5BFJJP00014AED.html&#39;)";			#mysql_query($sql4);			#mysql_query($sql5);			#mysql_query($sql6);			#mysql_query($sql7);			#mysql_query($sql8);			/*			插入测试数据			*/			for($x = 0; $x<100;$x++){				$sql ="Insert into content(name,age) values(&#39;zhangsan&#39;,($x+5))";				#mysql_query($sql);			}			mysql_close($conn);		?>	</span>

4.设计各个辅助页面

    home.php

   打开http://localhost/news/index.php时，显示给用户的信息

<span style="font-size:18px;"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>content</title>
<table border="1" width="100%" rules="none"> 	<tr><td><?php include &#39;content_table.php&#39;;?></td></tr>
</table></span>

   sidebar.php

   左右侧边栏的广告信息

<span style="font-size:18px;"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>sidebar</title>	<img  src="/static/imghw/default1.png" data-src="./pic/baner1.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner2.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner3.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner4.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner1.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner2.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner3.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br>	<img  src="/static/imghw/default1.png" data-src="./pic/baner4.jpg" class="lazy"    style="max-width:90%" alt="PHP之分页显示数据-资讯系统" ><br></span>

    navigationbar.php

    页面导航信息

<span style="font-size:18px;"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>navigatiobar</title>	<center width="100%" height="150px">		<img  src="/static/imghw/default1.png" data-src="./pic/header1.jpg" class="lazy"    style="max-width:90%" height="120px" alt="PHP之分页显示数据-资讯系统" ><br>		<font size="5px">		<a href="http://news.163.com/" target="content">首页</a>		<a href="content_news.php" target="content">新闻	</a>		<a href="home.php" target="content">表格	</a>		<!--下面的url-->		<a href="http://tech.163.com/" target="content">科技	</a>		<a href="http://ent.163.com/" target="content">娱乐	</a>		<a href="http://sports.163.com/" target="content">体育	</a>		<a href="http://news.163.com/" target="content">要闻	</a>		<a href="http://money.163.com/" target="content">财经	</a>		<a href="http://lady.163.com/" target="content">时尚	</a>		<a href="http://book.163.com/" target="content">文化	</a>		<a href="http://edu.163.com/" target="content">教育	</a>		<a href="http://digi.163.com/" target="content">数码	</a>		</font>	</center>	</span>

    footer.php

    页面底部信息

<span style="font-size:18px;"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>footer</title>	<center> 		<hr>		<font size="5px">页面底部信息</font>	</center></span>

5.操作数据库的类

   mysqlhelper.php

   该类用于对数据库进行一些基本操作

<span style="font-size:18px;">	<meta http-equiv="content-type" content="text/html;charset=utf-8">
<?php require_once &#39;config.php&#39;;	class MySQLHelper{	private $table;	/*		构造函数：		参数1：主机名		参数2：数据库用户名		参数3：数据库密码		参数4：要操作的数据库		参数5：操作数据库的字符编码		初始化对象的同时，进行连接数据库操作	*/	function __construct($table){		  $this->table=$table;	  $this->connect();	}		function connect(){		 $link=mysql_connect(HOST,USERNAME,PASSWORD) or die("连接数据库失败".mysql_error());		 mysql_select_db($this->table,$link) or die ("没有该数据库：".$this->table);		 mysql_query("SET NAMES ".CHARSET);	  	}	//受影响的行数	 function affected_rows(){				 return mysql_affect_rows();	 }	//数据条数	 function num_rows($query){				 return $mysql_num_rows($query);	 }	//插入的数据所在的id	 function insert_id(){			 return mysql_insert_id();	 }	 //处理返回的结果	 function fetch_row($query){		 return mysql_fetch_row($query);	 }	//服务器版本	 function version(){				 return mysql_get_server_info();	 }	 	//增	 function fn_insert($table,$name,$value){	  //insert into[表名] values('','',......顺序排列的数据);	   mysql_query("insert into $table ($name) values ($value)");	 }			 //删	 function fn_del($table,$data){	  //delete from [表名] where ([条件]);		 mysql_query("delete from $table where (id=$data)");	 }			 //查询全部结果	 function fn_search($table){		$res = mysql_query("select * from $table");		return $res;	 }			 //改	 function fn_update($table,$name1,$value,$name2,$id){		 //UPDATE [表名] SET [修改内容如name = 'Mary'] WHERE [条件]；		 mysql_query("update $table set $name1='$value' where $name2='$id'");	 }}?></span>

6.设计分页数据主页面

    content_table.php

    分页显示数据，每一页的数据是一张表格。

<span style="font-size:18px;"><meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>page</title>	<?php require_once &#39;mysqlhelper.php&#39;;?>		<table align="center" border="1" width="500px" height="10px">			<tr bgcolor="silver" align="center">
<td width="30%">id</td>
<td width="40%">name</td>
<td width="30%">age</td>
</tr>			<tr>			<?php $db = new MySQLHelper("news");				$res = $db->fn_search("content");				//var_dump($res);								//声明一些变量				$page_size="10";//每一页的条数				$count=mysql_num_rows($res);//总的条数				$page_number=ceil($count/$page_size);//向上舍入，获得最大页数				//当前的页数				if(empty($_GET['page']) || $_GET['page'] 						<td align="left"><?php echo $row[0]?></td>					<td align="center"><?php echo $row[1]?></td>					<td align="center"><?php echo $row[2]?></td>			</tr>			<?php }			?>			</table>		<p></p>		<table border="0" align="center" cellpadding="5px">			<tr>				<?php $key=&#39;&#39;;					if($current_page ==1){	//当前页是首页						$key.=&#39;首页&#39;;							$key.=&#39;  上一页&#39;;					}else{						$key.="<a href=\"".$_SERVER[&#39;PHP_SELF&#39;]."?page=1\">首页  ";						$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.(%24current_page-1).%22%5C%22">    上一页  </a>";					}										/*for($x = $current_page ; $x   $x ";					}*/					//中间页码策略：中间页数左右偏移2个页码					for($x = 0 ; $x"							." ".($current_page+$x)."";						}else{							$y =6+$x;							$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.%24y.%22%5C%22">"							." ".$y."</a>";						}					}										if($current_page == $page_number){	//当前页是尾页						$key.='  下一页';						$key.='  尾页';					}else{						$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.(%24current_page+1).%22%5C%22">     下一页  </a>";						$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.%24page_number.%22%5C%22">尾页</a>";					}									?>				<td><?php echo $key;?></td>								</tr>			<tr>				<td colspan="10">浏览次数:					<?php //查询数据库的次数						$sql="SELECT * FROM count_number where content_id=100";						$res = mysql_query($sql);						#echo mysql_num_rows($res);						#var_dump($res);												//获取数据库的浏览次数						while($row = mysql_fetch_array($res)){							$number =  $row[&#39;number&#39;];						}						//次数+1						$sql = "UPDATE count_number set number =".($number+1)." WHERE content_id=100";						mysql_query($sql);											//显示次数						echo $number;					?>				</td>
<td>			</td>
</tr>		</table>	</span>

    content_news.php

    分页显示数据信息，每一页的数据是一个新闻列表，文字和图片都可以点击，并进入新闻详情页面。

<span style="font-size:18px;"><meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<table border="1" rules="none" width="100%" cellpadding="5px" bgcolor="#F8F8F8">	<tr>
<?php require_once &#39;mysqlhelper.php&#39;;	header("Content-type:text/html;charset=utf-8");		$helper = new MySQLHelper("news");	$res = $helper->fn_search("news_content");	//声明一些变量	$total_count = mysql_num_rows($res);	//总的数据行数	$page_count=6;	//每页显示的数据条数	$page_number=ceil($total_count / $page_count);//总的页数		//获取当前的页码	if(empty($_GET['page'])){		$current_page=1;	}else{		$current_page=$_GET['page'];	}	//当前页的第一条数据应该是	$offset=$page_count*($current_page-1);	$sql="select * from news_content limit $offset,$page_count";	$res = mysql_query($sql);	//查询当前页的数据		while($row = mysql_fetch_array($res)){		#echo $row['id']."<br>";		#echo $row['image']."<br>";		#echo $row['title']."<br>";?>	<td width="100px">		<a href="content.php?news_id=<?php%20echo%20%24row%5B'news_id'%5D;?>">			<img  src="/static/imghw/default1.png" data-src=".$row['image']." class="lazy"    style="max-width:90%" height="80px" alt="PHP之分页显示数据-资讯系统" >		</a>	</td>	<td>
<a href="content.php?news_id=<?php%20echo%20%24row%5B'news_id'%5D;?>">		<?php echo $row[&#39;title&#39;];?></a>	</td>	</tr>
<?php }?><?php $key="";		$key.="总页数：".$current_page."/".$page_number."　　";	if($current_page == 1){		$key.="首页　";		$key.="上一页　";	}else{		$key.="<a href=\"".$_SERVER[&#39;PHP_SELF&#39;]."?page=1"."\">首页　";		$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.(%24current_page-1).%22%5C%22">上一页　</a>";	}		if($current_page == $page_number){		$key.="下一页　";		$key.="尾页　";	}else{		$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.(%24current_page+1).%22%5C%22">下一页　</a>";		$key.="<a href="%5C%22%22.%24_SERVER%5B'PHP_SELF'%5D.%22?page=%22.%24page_number.%22%5C%22">尾页　</a>";	}		$key.="　　总的数据条数：".$total_count;?></table>
<p></p>
<?php echo $key;?>	</span>

7.设计单条数据详情页面

  content.php

<span style="font-size:18px;"><meta http-equiv="content-type" content="text/html;charset=utf-8">
<script>	function jump(url){		//alert(url);		window.location.href=url;//页面重定向	}</script>	<?php require_once &#39;mysqlhelper.php&#39;;		$helper = new MySQLHelper("news");		//print_r($_GET);					$news_id =$_GET[&#39;news_id&#39;];	//获取新闻的id				$sql = "select * from count_number where content_id=".$news_id;		$res = mysql_query($sql);		//判断是否是第一次进来		if(mysql_num_rows($res) == 0){			$sql = "insert into count_number(content_id,number,is_first) values($news_id,1,&#39;true&#39;)";			#echo "第一次进来";			mysql_query($sql);			$number=1;		}else{			$sql="select number from count_number where content_id=".$news_id;				#echo "不是第一次进来";			$res = mysql_query($sql);			$row = mysql_fetch_array($res);			$number = $row[&#39;number&#39;]+1;			$sql="update count_number set number=".$number." where content_id=".$news_id;			mysql_query($sql);		}						$sql = "select * from news_content where news_id=".$news_id."";		$res = mysql_query($sql);		$row = mysql_fetch_array($res);		echo "<p>";		echo "<center>
<font size="5px" color="red">".$row['title']."</font><p></p>
</center>";		echo "<br>";		echo "<center><img  src="/static/imghw/default1.png" data-src=".$row['image']." class="lazy" alt="PHP之分页显示数据-资讯系统" ></center>";				//显示浏览次数		echo "页面浏览次数：".$number."　　　　　";		//点击超链接，跳转到详情页面		$st =$row['content'];		echo "<a href="'javascript:void(0)'" onclick="jump('$st')">跳转到详情页面</a>";	?></span>

三、界面效果