<?phpclass DataBase{
var $server = "loaclhost:3306";
var $dataBase = "topd3";
var $uid = "root";
var $pwd = "000000";
private function GetConnection(){
$Connection = mysql_connect ($server,$uid,$pwd);
return $Connection;
}
private function OpenDataBase($conn){
mysql_select_db($dataBase,$conn);
}
private function InitDataBase(){
$connection = GetConnection();
OpenDataBase($connection);
}
function DataBase(){
InitDataBase();
}
public function Execute($commandText){
$result= mysql_query ($commandText);
$dataTable = array();
while ($row = mysql_fetch_array($result)){
$dataTable[] = $row;
}
return $dataTable;
}
}
调用的时候报错
Fatal error: Call to undefined function InitDataBase()
照字面意思是方法InitDataBase未定义 可恶我明明定义了啊
?>
var $server = "loaclhost:3306";
var $dataBase = "topd3";
var $uid = "root";
var $pwd = "000000";
private function GetConnection(){
$Connection = mysql_connect ($server,$uid,$pwd);
return $Connection;
}
private function OpenDataBase($conn){
mysql_select_db($dataBase,$conn);
}
private function InitDataBase(){
$connection = GetConnection();
OpenDataBase($connection);
}
function DataBase(){
InitDataBase();
}
public function Execute($commandText){
$result= mysql_query ($commandText);
$dataTable = array();
while ($row = mysql_fetch_array($result)){
$dataTable[] = $row;
}
return $dataTable;
}
}
调用的时候报错
Fatal error: Call to undefined function InitDataBase()
照字面意思是方法InitDataBase未定义 可恶我明明定义了啊
?>
私有方法是不能在外部访问的又,方法总调用方法需要冠以 $this->
private function InitDataBase(){
$connection = GetConnection();
OpenDataBase($connection);
}
应写作
public function InitDataBase(){
$connection = $this->GetConnection();
$this->OpenDataBase($connection);
}
// var $server = "loaclhost:3306"; //这里loaclhost写错了
var $server = "localhost:3306";
var $dataBase = "dnkb";
var $uid = "root";
var $pwd = "123456";
private function GetConnection(){
// $Connection = mysql_connect ($server,$uid,$pwd); //$this-> 用来获取类中的属性和方法
$Connection = mysql_connect ($this->server,$this->uid,$this->pwd); //这里要用$this->//方式获取类中的属性
return $Connection;
}
private function OpenDataBase($conn){
mysql_select_db($this->dataBase,$conn);
}
private function InitDataBase(){
$connection = $this->GetConnection(); //这里要用$this-> 获取类中的方法
$this->OpenDataBase($connection); //这里要用$this-> 获取类中的方法
}
function DataBase(){
$this->InitDataBase(); //这里要用$this-> 获取类中的方法
}
public function Execute($commandText){
$result= mysql_query ($commandText);
$dataTable = array();
while ($row = mysql_fetch_array($result)){
$dataTable[] = $row;
}
return $dataTable;
}
}$database = new DataBase();
?>
下载地址如下:
PHP5面向对象初步_刀客羽朋版 http://download.csdn.net/detail/php_chizhou/3180873
function DataBase(){
InitDataBase();
}
//改为
function DataBase(){
$this->InitDataBase();
}调用自己的方法要用$this->
静态用self::
父类用parent::