说明：代码来源《PHP和MySQL Web应用开发》一书，还有就是代码有些是经过修改的，经过我的测验全部都可以用
这是数据库部分代码
//创建数据库 create database MySQLDB; //使用数据库 use mysqldb; //向数据库中插入表格 create table Employees(EmpName varchar(50) primary key,DepName varchar(50),Salary integer); //修改列名 alter table employees change column DepName Title varchar(50); //增加列 alter table employees add column DepName varchar(50); //向表格插入数据 insert into Employees values('张三','部门经理',6000,'人事部'); //插入出错，在插入前加set names gbk; 就ok了；http://www.cnblogs.com/sunzn/archive/2013/03/14/2960248.html //错误提示,Incorrect string value:"XX XX XX XX XX"for column 'XXX' at row 1 ALTER DATABASE database_name CHARACTER SET GBK;(修改database) ALTER DATABASE mysqldb CHARACTER SET GBK; //不可行 insert into Employees values('李四','职员',3000,'人事部'); insert into Employees values('王五','职员',3500,'服务部'); insert into Employees values('赵六','部门经理',6500,'开发部'); insert into Employees values('高七','职员',2500,'开发部'); insert into Employees values('马八','职员',3100,'人事部'); insert into Employees values('钱九','部门经理',5000,'财务部'); insert into Employees values('孙十','职员',2800,'财务部'); 删除列：alter table 表名 drop column 列名;
CreateTable.php 使用php在MySQL中创建表
<?PHP //创建数据库之后用这代码去创建表users $conn = mysqli_connect("localhost", "root", "123456", "MySQLDB"); if (empty($conn)) { die("mysqli_connect failed: " . mysqli_connect_error()); } //执行CREATE TABLE 语句 $sql = "CREATE TABLE IF NOT EXISTS Users (UserName VARCHAR(50) PRIMARY KEY, UserPwd VARCHAR(50), ShowName VARCHAR(50))"; $conn->query($sql); // 关闭连接 mysqli_close($conn); ?>
FetchData.php 在网页中显示MySQL数据库中表的内容示例
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> <?PHP $conn = mysqli_connect("localhost", "root", "123456", "MySQLDB"); if (empty($conn)) { die("mysqli_connect failed: " . mysqli_connect_error()); } mysqli_query($conn, "SET NAMES utf8"); // 查询Employees中的员工数据 $sql = "SELECT EmpName, Title, Salary FROM Employees"; $results = $conn->query($sql); // 循环处理结果集中的记录 while($row = $results->fetch_row()) { print($row[0] . " " . $row[1] . " " . $row[2] . "<BR>"); } $results->free(); // 关闭连接 mysqli_close($conn); /* 乱码问题： 加 <meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> 和 mysqli_query($conn, "SET NAMES utf8"); 来统一编码，from:http://jingyan.baidu.com/article/77b8dc7fcae06e6174eab6ba.html */ ?>
multi-query.php 使用$conn->multi_query()函数同时执行两个select语句的示例
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″> <?php $conn = mysqli_connect("localhost", "root", "123456", "MySQLDB"); if (empty($conn)) { die("mysqli_connect failed: " . mysqli_connect_error()); } mysqli_query($conn, "SET NAMES utf8"); $query = "SELECT EmpName FROM Employees;"; $query .= " SELECT DepName FROM Departments;"; if ($conn->multi_query($query)) { do { if ($result = $conn->store_result()) { while ($row = $result->fetch_row()) { echo($row[0] . "<br>"); } $result->close(); } } while ($conn->next_result()); } $conn->close(); /* 使用multi_query()函数同时执行两个select语句，分别查询员工姓名和部门名称 */ ?>
viewPage.php php分页显示MySQL数据中表记录的代码示例
<HTML> <HEAD><TITLE>分页显示记录</TITLE> <meta http-equiv="Content-Type" content="text/html; charset=utf8" /> </HEAD> <BODY> <?PHP // 获取当前页码 $page = $_GET['page']; if($page == 0) $page = 1; $PageSize = 3; // 为了演示分页效果， // 连接到数据库 $conn = mysqli_connect("localhost", "root", "123456", "MySQLDB"); if (empty($conn)) { die("mysqli_connect failed: " . mysqli_connect_error()); } // 设置中文字符集 mysqli_query($conn, "SET NAMES utf8"); //执行SELECT 语句，获取表Employees的记录总数 $sql = "SELECT COUNT(1) FROM Employees"; $results = $conn->query($sql); $row = $results->fetch_row(); $RecordCount = $row[0]; ////////////// // 计算总页数// ///////////// if( $RecordCount ){ //如果记录总数量小于每页显示的记录数量，则只有一页 if( $RecordCount < $PageSize ){ $PageCount = 1; } //取记录总数量不能整除每页显示记录的数量，则页数等于总记录数量除以每页显示记录数量的结果取整再加1 if( $RecordCount % $PageSize ){ $PageCount = (int)($RecordCount / $PageSize) + 1; } else { //如果没有余数，则页数等于总记录数量除以每页显示记录的数量 $PageCount = $RecordCount / $PageSize; } } else{ // 如果结果集中没有记录，则页数为0 $PageCount = 0; } echo("<BR>当前页码 :" . $page . "/" . $PageCount); ?> <table width="449" border="1"> <tr> <td>员工姓名</td> <td>职务</td> <td>工资</td> </tr> <?PHP // 循环显示当前页的记录 $sql = "SELECT EmpName, Title, Salary FROM Employees LIMIT " . ($page-1) * $PageSize . "," . $PageSize; $results = $conn->query($sql); while($row = $results->fetch_row()) { echo("<tr>"); echo("<td>" . $row[0] . " </td>"); echo("<td>" . $row[1] . " </td>"); echo("<td>" . $row[2] . " </td>"); echo("</tr>"); } // 关闭连接 mysqli_close($conn); // 显示分页链接 if($page == 1) echo("第一页 "); else echo(" <a href=viewPage.php?page=1>第一页</a> "); // 设置“上一页”链接 if($page == 1) echo(" 上一页 "); else echo(" <a href=viewPage.php?page=" . ($page-1) . ">上一页</a> "); // 设置“下一页”链接 if($page == $PageCount) echo(" 下一页 "); else echo(" <a href=viewPage.php?page=" . ($page+1) . ">下一页</a> "); //设置“最后一页”链接 if($page == $PageCount) echo(" 最后一页 "); else echo(" <a href=viewPage.php?page=" . $PageCount . ">最后一页</a> ") ?> </table> </BODY> </HTML>
截图：
