<h1>新闻信息查看</h1><?php$tiaojian1=" 1=1";$tiaojian2=" 1=1";$title="";          //为了下面foreach中能够取到这个变量，所以在外边定义一下。  $author="";if(!empty($_POST[‘title‘])){    $title=$_POST[‘title‘];    $tiaojian1=" title like ‘%{$title}%‘";    }    /*else    {        echo "<script> alert(‘请输入‘);</script>";    //如果输入的是空，可以做一个弹窗进行提示        }*/if(!empty($_POST[‘author‘])){    $author=$_POST[‘author‘];    $tiaojian2=" author like ‘%{$author}%‘";    }?>

<div><form action="" method="post">标题：<input type="text" name="title" value="http://www.mamicode.com/<?php echo $title; ?>">作者：<input type="text" name="author" value="http://www.mamicode.com/<?php echo $author; ?>">  <!--输入关键字后文本框中，需要给文本框添加一个value值,value="http://www.mamicode.com/<?php echo $title; ?>"--><input type="submit" value="http://www.mamicode.com/查询"></form><form action="fabu.php"><input type="submit" value="http://www.mamicode.com/添加新闻"></form></div> 

<form action="piliangshanchu.php" method="post"><table width="95%" border="1" cellpadding="0" cellspacing="0" align="center"><tr><td><input type="checkbox" onclick="quanxuan(this)">标题</td>  <!--在标题栏添加一个复选框--><td>作者</td><td>来源</td><td>内容</td><td>发布时间</td><td>删除</td><td>修改</td></tr><?php$db=new MySQLi("localhost","root","123","test1");mysqli_connect_error()?"连接失败":"";$sql="select * from news where {$tiaojian1} and {$tiaojian2}";echo $sql;                                                 //输出语句看看结果$result=$db->query($sql);$attr=$result->fetch_all();foreach($attr as $v){    /*$str=str_replace($title,"<mark>{$title}</mark>",$v[1]);  //str_replace进行替换，添加mark标签，对关键字进行特殊显示*/    $str=str_replace($title,"<span style=‘color:red;‘>{$title}</span>",$v[1]);    //还可以通过添加<span>标签，改span的color    echo "<tr><td><input type=‘checkbox‘ value=http://www.mamicode.com/‘{$v[0]}‘ name=‘sc[]‘ class=‘xuanzhong‘/>{$str}</td><td>{$v[2]}</td><td>{$v[3]}</td><td>{$v[4]}</td><td>{$v[5]}</td><td><a href=http://www.mamicode.com/‘shanchu.php?ids={$v[0]}‘ onclick=\"return confirm(‘确认删除嘛‘)\">删除</a></td><td><a href=http://www.mamicode.com/‘xiugai.php?ids={$v[0]}‘>修改</a></td></tr>";        //重点：进行复选框多选时候，name的值要用sc[]数组接收    }?></table><div><input type="submit" value="http://www.mamicode.com/批量删除"></div></form>

<script type="text/javascript">function quanxuan(a){    var ck=document.getElementsByClassName("xuanzhong");    for(var i=0;i<ck.length;i++)    {        if(a.checked)            //判断a的选中状态        {        ck[i].setAttribute("checked","checked");//设置添加属性        }        else        {            ck[i].removeAttribute("checked");//移除属性            }    }            }</script>

<?phpif(!empty($_POST[‘sc‘]))    //通过上面复选框的选中值，进行提取，提取出来是数组的形式{$attr=$_POST[‘sc‘];          //放到一个数组中$db=new MySQLi("localhost","root","123","test1");mysqli_connect_error()?"连接失败":"";/*foreach($attr as $v){$sql="delete from news where ids=‘{$v}‘";if($result=$db->query($sql)){    header("location:main.php");    }    else    {        echo "删除失败";        }}*/$atr=implode("‘,‘",$attr);            //通过implode函数，把数组合并成一个字符串，为下面的sql语句形成条件语句   条件语句in（‘‘,‘‘,‘‘,‘‘）这样的形式$sql="delete from news where ids in(‘{$atr}‘)";     if($result=$db->query($sql)){    header("location:main.php");    }    else    {        echo "删除失败";        }}