PHP MYSQL实现登陆和模糊查询两大功能

5年以前  |  阅读数:678 次  |  编程语言:PHP 

本文使用的软件版本如下:PHP版本 5.5.12;MYSQL版本 5.6.17;Apache 2.4.9 用的wampserver
一、PHPMYSQL实现登陆
一共含有两个文件:login.phplogincheck.php;
表单代码:


    <form action="logincheck.php"method="post">

         Yonghu:<inputtype="text" name="username" />

      <br />

      Mima:<input type="password" name="password" />

      <br />

      <input type="submit" name="submit" value="登陆" ahref="logincheck.php" />



      <a href="register.php">zhuce:</a>
    </form>  

后台处理代码:


    <?php

         if(isset($_POST["submit"])&& $_POST["submit"] == "登陆")

         {

              $user= $_POST["username"];

              $psw= $_POST["password"];

              if($user== "" || $psw == "")

              {

                  echo"<script>alert('请输入用户名或密码!'); history.go(-1);</script>";

              }

              else

              {

                  $link= mysqli_connect('localhost', 'sa', '123456','account');//链接数据库

                  mysqli_select_db($link,"account");

                  mysqli_query($link,'setname utf8');

                  $sql= "selectuser from zhanghu where user = '$_POST[username]'";

                  $result=mysqli_query($link,$sql)or die("Failed".mysql_error());

                  if($num=mysqli_num_rows($result))

                  {

                       $row= mysqli_fetch_array($result);    //将数据以索引方式储存在数组中

                       echo"welcome ";

                       echo$row[0];

                  }

                  else

                  {

                       echo"<script>alert('用户名或密码不正确!');history.go(-1);</script>";

                  }

              }

         }

         else

         {

              echo"<script>alert('Submit Failed!');history.go(-1);</script>";

         }



    ?>

Account数据库内容:

二、PHPMYSQL实现模糊查询

查询数据库(只给PHP的代码):


    <?php

         $mysqli=newmysqli();             

         $mysqli->connect("localhost","sa", "123456");

         if(mysqli_connect_errno()) {

              printf("Failllllll:%s\n", mysqli_connect_error());

              exit();

         }

         $mysqli->select_db("booklib");  

         $mysqli->query("SETNAMES utf8");   

         $rsbooks= $mysqli->query("select * from books where Name like'%$_POST[bookname]%'");

      $row_rsbooks = $rsbooks->fetch_assoc();

      $totalRows_rsbooks = $rsbooks->num_rows;    

    ?> Totel

    <?php echo $totalRows_rsbooks ?>books;

    <table width="600"border="1">

     <tr>

      <td bgcolor="#99CCFF"align="center">Name</td>

      <td bgcolor="#99CCFF" align="center">ISBN</td>

      <td bgcolor="#99CCFF"align="center">Store</td>

      <td bgcolor="#99CCFF"align="center">Do</td>

     </tr>

     <?php do { ?>

      <tr>

       <td><?php echo $row_rsbooks['Name']; ?></td>

       <td><?php echo $row_rsbooks['ISBN']; ?></td>

       <td><?php echo $row_rsbooks['Store']; ?></td>

       <td><fontcolor="#110BAA">rent</font></td>

      </tr>

      <?php } while ($row_rsbooks = $rsbooks->fetch_assoc()); ?>

    </table>

    <?php

     $rsbooks->close(); 

     $mysqli->close();

    ?>

数据库表的内容如下:

查询:

结果:

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