本文实例讲述了PHP使用mysql与mysqli连接Mysql数据库的方法。分享给大家供大家参考，具体如下：

代码很简单直接上了

/**

* @Author: HTL

* @Description: Description

*/

// 降低PHP默认的错误级别

// 只显示除禁用以外的所有错误

// 解决因为PHP5.3+版本太高而导致在使用mysql_connect时出现的弃用警告“Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead”

error_reporting(E_ALL ^ E_DEPRECATED);

$db_host="localhost";

$db_user="root";

$db_passwd="";

$db_name="mysql";

echo("
---------------------------mysql_connect------------------------

");

$query = "SELECT SESSION_USER(), CURRENT_USER(),now();";

$conn = mysql_connect($db_host, $db_user,$db_passwd);

if (!$conn)

{

die('Could not connect: ' . mysql_error());

}

mysql_select_db($db_name, $conn);

$result = mysql_query($query);

while($row = mysql_fetch_array($result)){

var_dump($row);

}

mysql_close($conn);

echo("
---------------------------mysqli_connect------------------------

");

$conn = mysqli_connect($db_host, $db_user, $db_passwd,$db_name) ;

if (!$conn)

{

die('Could not connect: ' . mysqli_error());

}

//execute the query.

$result = mysqli_query($conn, $query);

//display information:

while($row = mysqli_fetch_array($result)) {

var_dump($row);

}

mysqli_close($conn);

exit();

?>

有图有真相

希望本文所述对大家PHP程序设计有所帮助。