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![Uploading Paste_Image_732324.png . . .]
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<?php
class Db{
static private $_instance;
static private $_connectSource;
private $_dbConfig=array(
'host'=>'127.0.0.1',
'user'=>'root',
'password'=>'123456',
'database'=>'info'
);
private function __construct()
{
}
static public function getInstance(){
if(!(self::$_instance instanceof self)){
self::$_instance=new Db();
}
return self::$_instance;
}
public function connect(){
if(!self::$_connectSource) {
self::$_connectSource = @mysql_connect($this->_dbConfig['host'], $this->_dbConfig['user'], $this->_dbConfig['password']);
if (!self::$_connectSource) {
die('mysql connect error ' . mysql_error());
}
mysql_select_db($this->_dbConfig['database'],self::$_connectSource);
mysql_query("set names UTF8", self::$_connectSource);
}
return self::$_connectSource;
}
}
$connect=Db::getInstance()->connect();
$sql="select * from test";
$result=mysql_query($sql,$connect);
echo mysql_num_rows($result);
?>
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