search
Homephp教程php手册PHP MYSQL实现登陆和模糊查询两大功能,mysql模糊查询

PHP MYSQL实现登陆和模糊查询两大功能,mysql模糊查询

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><br />

后台处理代码:

<&#63;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>";

     }

 

&#63;>

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):

<&#63;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;    

&#63;> Totel

<&#63;php echo $totalRows_rsbooks &#63;>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>

 <&#63;php do { &#63;>

  <tr>

   <td><&#63;php echo $row_rsbooks['Name']; &#63;></td>

   <td><&#63;php echo $row_rsbooks['ISBN']; &#63;></td>

   <td><&#63;php echo $row_rsbooks['Store']; &#63;></td>

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

  </tr>

  <&#63;php } while ($row_rsbooks = $rsbooks->fetch_assoc()); &#63;>

</table>

<&#63;php

 $rsbooks->close(); 

 $mysqli->close();

&#63;>

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。

您可能感兴趣的文章:

  • 两大步骤教您开启MySQL 数据库远程登陆帐号的方法
  • MySQL单表多关键字模糊查询的实现方法
  • PHP+MYSQL会员系统的登陆即权限判断实现代码
  • 一个简单的网页密码登陆php代码
  • mysql增加新用户无法登陆解决方法
  • MySql like模糊查询通配符使用详细介绍
  • PHP登陆后跳转到登陆前页面实现思路及代码
  • php中session退出登陆问题
  • mysql中模糊查询的四种用法介绍
  • thinkphp实现like模糊查询实例
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
php怎么把负数转为正整数php怎么把负数转为正整数Apr 19, 2022 pm 08:59 PM

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

php怎么实现几秒后执行一个函数php怎么实现几秒后执行一个函数Apr 24, 2022 pm 01:12 PM

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php怎么除以100保留两位小数php怎么除以100保留两位小数Apr 22, 2022 pm 06:23 PM

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php怎么根据年月日判断是一年的第几天php怎么根据年月日判断是一年的第几天Apr 22, 2022 pm 05:02 PM

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php字符串有没有下标php字符串有没有下标Apr 24, 2022 am 11:49 AM

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

php怎么读取字符串后几个字符php怎么读取字符串后几个字符Apr 22, 2022 pm 08:31 PM

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

php怎么替换nbsp空格符php怎么替换nbsp空格符Apr 24, 2022 pm 02:55 PM

方法:1、用“str_replace("&nbsp;","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\&nbsp\;||\xc2\xa0)/","其他字符",$str)”语句。

php怎么判断有没有小数点php怎么判断有没有小数点Apr 20, 2022 pm 08:12 PM

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),