使用PDO而不是mysql_*

Question

我更改了以下代码:

mysql_connect('localhost','username','password');
mysql_select_db('pl') or die( "Unable to select database");

至

PDO('mysql:host=localhost;dbname=pl;charset=UTF-8', 'username', 'password');

它是正确的还是我必须将它传递给变量(在PDO教程中它被传递给变量db;它的目的是什么？http://wiki.hashphp.org/PDO_Tutorial_for_MySQL_Developers)

Answer 1

修改您的代码:

PDO('mysql:host=localhost;dbname=pl;charset=UTF-8', 'username', 'password');

至:

$Connection = new PDO('mysql:host=localhost;dbname=pl;charset=UTF-8', 'username', 'password');

并且您的基本查询结构将围绕您的$Connection变量.例:

$Query = $Connection->query("LIST TABLES");
$Results = $Query->fetchAll();

这有点像:

$Query = mysql_query("LIST TABLES");
$Results = mysql_fetch_array($Query);

阅读这些手册: