PHP访问MySql数据库 初级篇
在网站后台,经常要与数据库打交道。本文介绍如何使用XAMPP来管理MySql数据库及如何用PHP来访问MySql数据库。 一.使用XAMPP来管理MySql数据库 首先使用XAMPP打开MySql的管理页面。步骤如下:启动XAMPP后点击Admin进入XAMPP for Windows的主页面,在主页面中
在网站后台,经常要与数据库打交道。本文介绍如何使用XAMPP来管理MySql数据库及如何用PHP来访问MySql数据库。
一.使用XAMPP来管理MySql数据库
首先使用XAMPP打开MySql的管理页面。步骤如下:启动XAMPP后点击Admin进入XAMPP for Windows的主页面,在主页面中点击phpMyAdmin。
进入phpMyAdmin页面后,新建数据库test并在此数据库中建立t_student表,表共三个字段,编号id,姓名name,年龄age。
然后就可以开始用PHP来访问MySql数据库了。由于PHP已经对访问MySql数据库作了良好的封装,因此用PHP访问MySql是一件非常容易的事情。
二.PHP访问MySql数据库
下面的PHP程序访问test数据库中t_student表,读取数据并以表格的形式输出数据。全部程序代码如下:
// by MoreWindows( http://blog.csdn.net/MoreWindows ) //定义常量 define(DB_HOST, 'localhost'); define(DB_USER, 'root'); define(DB_PASS, '111111'); define(DB_DATABASENAME, 'test'); define(DB_TABLENAME, 't_student'); //数据库表的列名 $dbcolarray = array('id', 'name', 'age'); //mysql_connect $conn = mysql_connect(DB_HOST, DB_USER, DB_PASS) or die("connect failed" . mysql_error()); mysql_select_db(DB_DATABASENAME, $conn); //读取表中纪录条数 $sql = sprintf("select count(*) from %s", DB_TABLENAME); $result = mysql_query($sql, $conn); if ($result) { $count = mysql_fetch_row($result); } else { die("query failed"); } echo "表中有$count[0] 条记录<br>"; $sql = sprintf("select %s from %s", implode(",",$dbcolarray), DB_TABLENAME); $result = mysql_query($sql, $conn); //表格 echo '
" . implode(" | ", $dbcolarray) . " | "; echo $thstr; //表中的内容 while ($row=mysql_fetch_array($result, MYSQL_ASSOC))//与$row=mysql_fetch_assoc($result)等价 { echo "
---|
$row[$td] | "; echo $tdstr; echo "
运行结果如下:
这种HTML元素全由PHP输出的方式比较原始,将介绍用smarty来完成读取数据库的任务并将《jquery 表格的增加删除和修改及设置奇偶行颜色》中的设置表格奇偶行颜色的功能加入。
http://blog.csdn.net/morewindows/article/details/7086524

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