本文主要讲述如何通过PHP+HTML简单实现BBS论坛和发帖/回帖的功能,这是提取我们php项目的部分内容。主要内容包括:
1.通过JavaScript和Iframe实现局部布局界面
2.PHP如何定义类实现访问数据库功能
3.实现简单的BBS论坛和发帖/回帖功能
由于这个项目是十个人在寒假完成,所以采用了SAE搭建在线的后台数据库,其他人在通过Apache本地设计网页、访问数据库的方法实现,相当于简单的BS三端访问。
源码下载地址:
访问 http://localhost:8080/testphp/index.php效果如下图所示:
首先是搭建首页的布局,主要布局分为head、main_left和main_right。其中右边显示部分采用的是iframe实现的局部显示,而左边采用JavaScript实现点击隐藏和显示功能。其中index.php首页代码如下:
<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>《分布式系统》精品课程学习</title><link href="css/mycss.css" type="text/css" rel="stylesheet"/><style type="text/css"> /* 这个链接改变颜色 */ a.one:link {color: #ff0000} a.one:visited {color: #0000ff} a.one:hover {color: #ffcc00}</style></head><body> <!-- 布局顶部登录状态 --><div id="main"><TABLE cellSpacing=0 cellPadding=0 width="100%" background="images/header_bg.gif" border=0> <!--头部图片--> <TR height=80> <TD width=260> <IMG height=80 src="images/logo.png" width=260> </TD> <TD style="FONT-SIZE: 12px; FONT-WEIGHT: bold; COLOR: #000; PADDING-TOP: 20px; PADDING-RIGHT: 20px" align=right> 您还未登录! | <A class="one" href="login.php" >登录</A>| <A class="one" href="register_student.php" >学生注册</A>| <A class="one" href="register_teacher.php" >教师注册</A> </TD> </TR></TABLE><TABLE cellSpacing=0 cellPadding=0 width="100%" border=0> <TR bgColor=#1c5db6 height=4> <TD></TD></TR></TABLE><br /><!-- 布局中部 --><div id="middle"><!-- 布局中部右边 --> <div id="index_right"><iframe height="100%" width="100%" border="0" frameborder="0" src="main_right.php" name="rightFrame" id="rightFrame" title="rightFrame"></iframe></div><!-- 布局中部左边 --><div id="index_left"><?php include('main_left.php');?></div></div>html, body { height: '100%'; width: '100%';}/*头部布局*/#main{ margin-left:200px; width:950px;}/*中部布局*/#middle{ width:950px; height:500px; background-color:#b6effa;}/*中部左边*/#index_left{ float:left; margin-top:10px; margin-left:10px; width:180px; height:480px;}/*中部右边*/#index_right{ float:right; margin-top:10px; margin-right:20px; width:720px; height:480px; border-style:double;}/*中部右边*/#logout_middle{ float:right; margin-top:100px; margin-right:220px; width:500px; height:300px; border-style:double; background-color:#ffffff;}
<?php header("Content-Type: text/html; charset=utf-8"); //注意:include一个php文件不能重复,要递归检查是否重复引用 include ("../database/httppost.php");?><!-- 需要注意在Html中“..”表示回到上一级目录 而css与main_right3-1.php同级目录 --><link rel="stylesheet" href="css/main.css" type="text/css" /><TABLE cellSpacing=0 cellPadding=0 width="100%" align=center border=0> <TR height=28> <TD >当前位置: BBS论坛</TD> <TD align=right><A href="main_right.php" class="one"> 返回 </A></TD> </TR> <TR> <TD bgColor=#b1ceef height=1 colspan="2"></TD></TR> <TR height=10> <TD background=images/shadow_bg.jpg colspan="2"></TD></TR></TABLE><div class="middle"><div class="wrap"> <div class="wrap_left"> <div class="wenda-head"> <a href="#" class="quealltab onactive" >最新</a> <a href="#" class="quealltab " >热门</a> <a href="#" class="quealltab " >等待回复</a> </div> <?php //查询贴 $hgi=new HttpPostInf(); $result=$hgi->doquery('2',"select * from BBS_Post;"); //解析json $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ ?> <div class="wenda-list"> <div class="headslider"> <img src='images/bbs3.jpg' class="wenda_list_head" style="max-width:90%" style="max-width:90%" / alt="PHP+HTML简单实现BBS论坛与回帖" > <a href="" title="name" class="wenda-nickname"><?php echo $dj[$i]['BP_Pid']; ?></a> </div> <div class="qaslider"> <ul> <li><img src="images/bbs1.jpg" class="icon"/ alt="PHP+HTML简单实现BBS论坛与回帖" ><a href="main_right3-1-content.php?bbsid=<?php echo $dj[$i]['BP_Pid']; ?>" class="wendatitle"><?php echo $dj[$i]['BP_Ptitle']; ?></a></li> <li><img src="images/bbs2.png" class="icon2"/ alt="PHP+HTML简单实现BBS论坛与回帖" ><span class="replydet">发帖身份: <?php if($dj[$i]['BP_Ptype']==0) echo "教师"; if($dj[$i]['BP_Ptype']==1) echo "学生"; ?> | 发帖人编号: <?php echo $dj[$i]['BP_Puserid']; ?></span></li> <li><span class="time">提问时间:<?php echo $dj[$i]['BP_Ptime']; ?></span> </ul> </div><!--qaslider--> </div><!--wenda-list--> <?php //结束循环 } ?></div><!--wrap--></div><!--wrap_right--> </div><!--middle--><TABLE cellSpacing=0 cellPadding=2 width="95%" align=center border=0 > <TR height=20> <TD></TD> </TR></TABLE>
其中main_right3-1-content.php代码如下:
<?php header("Content-Type: text/html; charset=utf-8"); include ("../database/human.php"); session_start(); ?><link rel="stylesheet" href="css/main.css" type="text/css" /><TABLE cellSpacing=0 cellPadding=0 width="100%" align=center border=0> <TR height=28> <TD background=images/title_bg1.jpg>当前位置: BBS论坛</TD> <TD align=right><A href="main_right6-1.php" class="one"> 返回 </A></TD> </TR> <TR> <TD bgColor=#b1ceef height=1 colspan="2"></TD></TR> <TR height=10> <TD background=images/shadow_bg.jpg colspan="2"></TD></TR></TABLE><!-- PHP数据库中获取内容 --><?php //查询BBS $hgi=new HttpPostInf(); $result=$hgi->doquery('2',"select * from BBS_Post where BP_Pid='".$_GET['bbsid']."';"); //解析json $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ $_SESSION['bbsid']=$dj[$i]['BP_Pid'];?><div class="middle"><div class="wrap"> <div class="wrap_left"> <div class="wenda-head"> <TABLE cellSpacing=0 cellPadding=0 width="100%" align=center border=0 bgcolor="blue"> <TR height=10> <TD></TD></TR> <TR height=22> <TD style="PADDING-LEFT: 10px; FONT-WEIGHT: bold; COLOR: #ffffff" align=left>[贴] <?php echo $dj[$i]['BP_Ptitle']; ?></TD></TR> <TR height=10> <TD></TD></TR> </TABLE> </div> <!-- 楼主内容 --> <TABLE cellSpacing=0 cellPadding=0 width="95%" align=center border=0> <tr> <td valign="top"><div align="middle" width=150><BR /><BR /><img src='images/tx.jpg' style="max-width:90%" style="max-width:90%" / alt="PHP+HTML简单实现BBS论坛与回帖" > <BR /><BR />楼主 1# <BR /> <?php echo $dj[$i]['BP_Puserid']; ?> <BR />身份 <?php if($dj[$i]['BP_Ptype']==0) echo "教师"; if($dj[$i]['BP_Ptype']==1) echo "学生"; ?><BR /><?php echo $dj[$i]['BP_Ptime']; ?></div></td> <!-- 多行文本输入控件 disabled="disabled"不可编辑 --> <td ><textarea rows="15" type="text" width="400px" style="resize:none;font-size:16px;" maxlength="2000" name="content" cols="60" disabled="disabled"><?php echo $dj[$i]['BP_Cont']; ?></textarea></td> </tr> <TR height=4> <TD colspan="3"></TD> </TR> <tr> <td colspan="2"><hr width="100%" size="2" color="#FF0000"></td> </tr> </TABLE> <!--上面的php中while循环并没有结束,还有右括号--> <?php } //查询BBS $hgi=new HttpPostInf(); $result=$hgi->doquery('2',"select * from BBS_Reply where BR_Pid='".$_GET['bbsid']."';"); //解析json $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ ?> <!-- 楼层回复内容 --> <TABLE cellSpacing=0 cellPadding=0 width="95%" align=center border=0> <tr> <td valign="top"><div align="middle" width=150><BR /><BR /> <img src='images/tx.jpg' style="max-width:90%" style="max-width:90%" / alt="PHP+HTML简单实现BBS论坛与回帖" > <BR /><BR />楼层 <?php $_SESSION['bbshfid']=time(); echo $i+2;?># <BR /> <?php echo $dj[$i]['BR_Ruserid']; ?> <BR />身份 <?php if($dj[$i]['BR_Rtype']==0) echo "教师"; if($dj[$i]['BR_Rtype']==1) echo "学生"; ?> <BR /><?php echo $dj[$i]['BR_Ptime']; ?> <BR />回复楼层<?php echo $dj[$i]['BR_Pfloor']; ?>#</div></td> <!-- 多行文本输入控件 disabled="disabled"不可编辑 --> <td ><textarea rows="15" type="text" width="400px" style="resize:none;font-size:16px;" maxlength="2000" name="content" cols="60" disabled="disabled"><?php echo $dj[$i]['BR_Cont']; ?></textarea></td> </tr> <TR height=4> <TD colspan="3"> </TD> </TR> <tr> <td colspan="2"><hr width="100%" size="2" color="#FF0000"></td> </tr> </TABLE> <?php } ?> <!-- 回复内容 --> <form id="form1" name="form1" method="post" action="main_right3-1-content.php"> <TABLE cellSpacing=0 cellPadding=0 width="95%" align=center border=0> <tr> <td colspan="2"> 回复楼层 <input type="text" name="lc" id="lc" value="" style=width:150pt; maxlength="50"/> </td> </tr> <tr> <td valign="top"><div align="middle" width=150> <BR /><BR /> 回复 <BR /></div></td> <!-- 多行文本输入控件 disabled="disabled"不可编辑 --> <td ><textarea rows="10" type="text" width="400px" style="resize:none;font-size:16px;" maxlength="2000" name="bbscontent" cols="60" ></textarea></td> </tr> <tr> <td colspan="2" align="middle"> <input type="submit" style='font-size:22px' name="Submit" value="提交回复"/> </td> </tr> <TR height=4><TD colspan="3"></TD></TR> <tr> <td colspan="2"><hr width="100%" size="2" color="#FF0000"></td> </tr> </TABLE> </form></div><!--wrap--></div><!--wrap_right--> </div><!--middle--><TABLE cellSpacing=0 cellPadding=2 width="95%" align=center border=0> <TR height=20> <TD></TD></TR></TABLE><!-- 提交当前页面POST数据库表单处理 --><?php if (!empty($_POST['bbscontent'])) { if($_SESSION['radio']==1) $a=1; //学生 if($_SESSION['radio']==2) $a=0; //老师 //SQL更新 $sql = "INSERT INTO BBS_Reply (BR_Rid,BR_Pid,BR_Ruserid,BR_Rtype,BR_Ptime,BR_Pfloor,BR_Cont) VALUES ("; $sql .= "'".$_SESSION['bbshfid']."',"; $sql .= "'".$_SESSION['bbsid']."',"; $sql .= "'".$_SESSION['number']."',"; $sql .= "'".$a."',"; $sql .= "'".date('Y-m-d')."',"; $sql .= "'".$_POST['lc']."',"; $sql .= "'".$_POST['bbscontent']."'"; $sql .= ");"; //更新信息 //echo $sql; $hgi=new HttpPostInf(); $result=$hgi->doquery('1',$sql); //echo "<script>alert('恭喜你修改成功!');</script>"; header('Location:main_right3-1.php'); }?>
发帖的代码就不贴出来了,可以查看源代码。写到此处可能你会疑惑数据库访问部分的内容,下面进行简单讲解吧!
<?phpheader("Content-Type: text/html; charset=utf-8");class HttpPostInf{ function __construct(){ //无参构造函数 } function doquery($type , $sql){ //网路通信函数 $data = array ('sqlType' => $type , 'sqlExe' => $sql); $data = http_build_query($data); $opts = array ('http' => array ('method' => 'POST','header'=> "Content-type: application/x-www-form-urlencoded\r\n" ."Content-Length: " . strlen($data) . "\r\n",'content' => $data)); $context = stream_context_create($opts); $html = file_get_contents('http://courseweb.sinaapp.com/courseweb.php', false, $context); return $html; } }?><?phpheader("Content-Type: text/html; charset=utf-8");include_once("httppost.php");//人类,拥有教师和学生的共同属性和方法class Human{ private $hid; //唯一编号 private $pwd; //密码 private $name; //名字 private $sex; //性别 private $email; //邮箱 function __construct(){ //无参构造函数 } //静态验证函数 static function id_vf($id,$spwd,$type){ //类静态方法 type=1为学生,2为老师 $hpi=new HttpPostInf(); if($type==1) { $result=$hpi->doquery('2',"select * from Student_Info where Sinf_id='".$id."';"); if($result =='error' || $result=='null'){ //返回无值 return -1; //没有用户,返回0 } else{ $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ //只有一个密码 $right_pwd=$dj[$i]['SInf_Pwd']; //学生登录密码 } if($spwd == $right_pwd) return 1; //验证成功,可以登陆 else return 0;//密码错误 } } else if($type==2) { $result=$hpi->doquery('2',"select * from Teacher_Info where TI_id='".$id."';"); if($result =='error' || $result=='null'){ //返回无值 return -1; //没有用户,返回0 } else{ $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ //只有一个密码 $right_pwd=$dj[$i]['TI_Pwd']; //学生登录密码 } if($spwd==$right_pwd) return 1; //验证成功,可以登陆 else return 0;//密码错误 } } }}class Student extends Human{ private $bir; //出生日期 private $maj; //专业 private $eym; //入学年份 private $score; //得分 function __construct($sid){ //1参构造函数 $this->hid=$sid; $stu=new HttpPostInf(); $result=$stu->doquery('2',"select * from Student_Info where Sinf_ID='".$sid."';"); //echo 'result:'.$result; //解析json $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ //只返回1个,所以只取一个即可,jcount=1 $this->bir=$dj[$i]['SInf_Bir']; $this->maj=$dj[$i]['SInf_Maj']; $this->eym=$dj[$i]['SInf_Eym']; $this->score=$dj[$i]['SInf_Score']; //或者写:$score=$dj->Sinf_Bir; $this->pwd=$dj[$i]['SInf_Pwd']; $this->name=$dj[$i]['SInf_Name']; $this->sex=$dj[$i]['SInf_Sex']; $this->email=$dj[$i]['SInf_Email']; } } function getname(){return $this->name;} function getsex(){return $this->sex;} function getemail(){return $this->email;} function getpwd(){return $this->pwd;} function getbir(){return $this->bir;} function getmaj(){return $this->maj;} function geteym(){return $this->eym;} function getscore(){return $this->score;}}class Teacher extends Human{ private $ptitle; //职称 private $res; //成果 private $award; //获奖 function __construct($tid){ //1参构造函数 $this->hid=$tid; $stu=new HttpPostInf(); $result=$stu->doquery('2',"select * from Teacher_Info where TI_ID='".$tid."';"); //echo 'result:'.$result; //解析json $dj=json_decode($result,true); $jcount=count($dj); for($i=0; $i<$jcount; $i++){ //只返回1个,所以只取一个即可,jcount=1 $this->ptitle=$dj[$i]['TI_Ptitle']; $this->res=$dj[$i]['TI_Res']; $this->award=$dj[$i]['TI_Award']; //或者写:$score=$dj->Sinf_Bir; $this->pwd=$dj[$i]['TI_Pwd']; $this->name=$dj[$i]['TI_Name']; $this->sex=$dj[$i]['TI_Sex']; $this->email=$dj[$i]['TI_Email']; } } function getname(){return $this->name;} function getsex(){return $this->sex;} function getemail(){return $this->email;} function getpwd(){return $this->pwd;} function getptitle(){return $this->ptitle;} function getres(){return $this->res;} function getaward(){return $this->award;}}?>
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