PHP MYSQL实现登陆和模糊查询两大功能
author:一佰互联 2019-04-27   click:139

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", 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:

以上就是本文的全部内容,希望对大家学习php程序设计有所帮助。