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php 连接mysql实例代码_MySQL

Jun 01, 2016 pm 01:49 PM
mysql php

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<?php <br />mysql_connect("localhost", "root","1981427") //连接位于localhost的服务器,用户名为root <br>?>
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连接再选择数据库

 

<?php <br /><br>@mysql_select_db("test") //选择数据库mydb<br><br>?>
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这样我们就可以实现连接到数据库了

可能碰到的问题

运行代码出现:Call  to  undefined  function  'mysql_connect()'… 失败

这个提示function undefined是说没有mysql_connect()函数,

解决方法如下

将php_mysql.dll和libmysql.dll文件拷贝至c:winntsystem32中(我漏了libmysql.dll)

找到php.ini中的;extension=php_mysql,去掉前面的";"  重启服务器

 

好了万事具备了,现在我们就差一个简单的连接实例

例1

conn.php文件代码如下:

<?php <br />$conn = @mysql_connect("localhost", "root", "root") or die("数据库链接错误");<br>mysql_select_db("data", $conn);//data为数据库名称<br>mysql_query("set names 'GBK'"); //使用GBK中文编码;<br>?>
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index.php文件代码如下:

<?php <br /> include("conn.php");//引入conn.php文件<br>  $SQL="SELECT * FROM `table` order by id desc";<br>  $query=mysql_query($SQL);<br>  while($row=mysql_fetch_array($query)){<br>?>
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显示数据内容: 

=$row[user]?><br><br>  }<br>?>
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这样我们就实现的简单的php mysql连接并查询出我们需要的数据了。


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