<?php error_reporting(0); //关闭NOTICE提示 require_once "conn.php"; $pagesize=5; //每页显示5条数据 $sql="select count(*) from guestlist "; //选择数据库,计算符合条件的行数并返回行数 $result= mysql_query($sql); //执行,如果成功则返回结果集(从数据库中找到所有的数据,返回条数) $row = mysql_fetch_row($result); //获得数组 Array[0]="数据库里的总条数" $infoCount =$row[0]; //获得总条数：取得数组中的值$row[0]="数据库里的总条数" $pageCount = ceil($infoCount/$pagesize); //获取总页数(总个数/每页的个数5) $currpage=empty ($_GET["page"])?1:$_GET["page"]; //如果当前页为空 则定义page=1即$currpage=1反之亦然 if($currpage>$pageCount) //如果输入的页数超过总页数则默认跳转到最后一页 { $currpage=$pageCount; } ?> <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title></title> <!--此处添加了bootstrip样式--> <link href="https://www.jb51.net/dist/css/bootstrap.min.css" type="text/css" /> <link href="https://www.jb51.net/css/index.css" type="text/css" /> <script> function test(){ var sum; if(document.frm.title.value==''){ alert('请填写标题'); return false; }else{ sum =document.frm.title.value.length; if(sum<5 || sum>20){ alert('标题长度 5-20个字符'); return false; } } if(document.frm.username.value==''){ alert('请填写用户网名'); return false; } if(document.frm.content.value==''){ alert("请填写内容"); return false; } return true; } </script> </head> <body> <div> <h5><?php echo $infoCount;?>条留言</h5><br/> <ul> <li>留言标题</li> <li>用户网名</li> <li>时间</li> </ul> <?php //从当前页开始 向下取出5个 $re= mysql_query("select * from guestlist order by id desc limit ".($currpage-1)*$pagesize.",".$pagesize); while($row= mysql_fetch_assoc($re)) //得到一行数据的数组，再执行则得到再下一行，如果得到是最后一行，那么再执行则返回false { ?> <ul> <li><?php echo $row["title"];?></li> <li><?php echo $row["username"];?></li> <li><?php echo $row["addtime"];?></li> </ul> <div> <p><strong>留言内容:</strong></p><span><?php echo $row["content"];?></span> </div> <?php } ?> <hr/> <ul> <!--上一页--> <?php for($i=1;$i<=$pageCount;$i++) { if($i==$currpage) { echo "<li><a href=?page=".($i-1).">«</a></li>"; } } ?> <!--数字页--> <?php for($i=1;$i<=$pageCount;$i++) { if($i==$currpage) { echo "<li ><a>$i</a></li>"; }else{ echo "<li><a href='?page=$i'>$i</a></li>";} } ?> <!--下一页--> <?php for($i=1;$i<$pageCount;$i++) { if($i==$currpage) { echo "<li><a href=?page=".($i+1).">»</a></li>"; } } ?> </ul> <br/> <ul> </ul> <hr/> <strong>发表留言</strong> <form action="result.php" method="post" onsubmit="return test()"> <table cellpadding="0" cellspacing="0" > <tr> <td >留言标题:</td> <td><input type="text" autocomplete="off"/></td> </tr> <tr> <td>网名:</td> <td><input type="text" autocomplete="off"/></td> </tr> <tr> <td>留言内容:</td> <td><textarea cols="42" rows="5" autocomplete="off"/></textarea></td> </tr> <tr> <td></td> <td><input type="submit" value="提交"/></td> </tr> </table> </form> </div> </body> </html>
conn.php
<?php $link = mysql_connect("localhost","root"," "); mysql_select_db("guestbook"); mysql_query("set names utf-8"); if(!$link){ die("Connection failed: " . mysqli_connect_error()); } //echo "链接成功"; ?>
result.php
<?php error_reporting(0); //关闭NOTICE提示 require_once "conn.php"; $title = $_REQUEST['title']; $username = $_REQUEST['username']; $content = $_REQUEST['content']; $content = str_replace("\n","<br>",str_replace(" "," ",$content)); //显示'空格'和'回车' $week = '星期'.mb_substr( "日一二三四五六",date("w"),1,"utf-8" ); $isok =mysql_query("insert into guestlist(title,username,content,addtime)values('$title','$username','$content','".date("Y-m-d H:i:s")." $week ')"); if($isok) { echo "<script> alert('提交成功'); location.href='index.php'; </script>"; }else { echo "<script> alert('提交失败'); location.href='index.php'; </script>"; } ?>
css/index.css