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php常用技术

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Release: 2016-06-23 14:32:02
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1.       连接数据库(connect.inc.php):

$dbhost = 'localhost';//数据库服务器

$dbuser ='root';//数据库用户名

$dbpwd = '';//数据库密码

$dbname = '';//数据库名        

$db=new mysqli($dbhost,$dbuser,$dbpwd,$dbname);//建立一个mysql连接对象

if(mysqli_connect_errno())//检查是否连接成功

{

           echo 'Error:Could not connect to database'.$dbname.'Please try again later';

           exit;

}

$db->query("set names 'utf8';"); //设定字符集

?>

在建立数据库连接后,通过引用include(“connect.inc.php”)就可以使用$db对象

2.       DOMdocument建立xml文件

Xml是网络数据通信的重要形式,另一种则为json。

创建DOMdocument 对象: 

$dom=new DOMdocument('1.0','iso-8859-1');

$dom->formatOutput = true; 

创建根结点:

        $root=$dom->appendChild($dom->createElement('root'));

为根结点添加元素:

$root>appendChild($log=$dom->createElement("log",$row['log_content']));

为节点添加属性:

$log->appendChild(new DOMAttr("id",$row['log_id']));

$log->appendChild(new DOMAttr("title",$row['log_name']));

$log->appendChild(new DOMAttr("date",$row['log_date']));

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