PHP链接本地mysql数据库操作实例

<?php  

 /* Connect to a MySQL server 连接数据库服务器 */
 
$link = mysqli_connect(   
 'localhost',    /* The host to connect to 连接MySQL地址 */ 
 'root',         /* The user to connect as 连接MySQL用户名 */ 
 'yourpassword',       /* The password to use 连接MySQL密码 */  
 'yourdatabase');    /* The default database to query 连接数据库名称*/ 
 
 if (!$link) 
 {  
	 printf("Can't connect to MySQL Server. Errorcode: %s ", mysqli_connect_error()); 
	 exit; 
 }
 else
 { 
	 echo ('数据库连接上了！')."<br/>";   /* Close the connection 关闭连接*/
 }
  
 mysqli_query($link,'set names utf8');    //解决中文乱码的问题
 
 if ($result = mysqli_query($link, 'SELECT ID,NAME,AGE FROM userinfo')) 
 {  
	echo('ID  NAME  AGE '). "<br/>";  
     /* Fetch the results of the query 返回查询的结果 */ 
	while( $row = mysqli_fetch_assoc($result) )
	{   
	   echo $row['ID'], " ", $row['NAME'], " ", $row['AGE'], "<br/>";   
	// printf("%s (%s) ", $row['id'],$row['class'], $row['scores']); 
	}   
    /* Destroy the result set and free the memory used for it 结束查询释放内存 */
    mysqli_free_result($result); 
 
 }  
 
 /* Close the connection 关闭连接*/ 
 mysqli_close($link);
 
 ?>