好的,我是一名完全新手,在php中使用面向对象编程,我尝试着从简单的开始,但是结果并不如我所期望的那样。
<?php
class mySQL{
var $host;
var $username;
var $password;
var $database;
public function connect($set_host, $set_username, $set_password, $set_database){
$this->host = $set_host;
$this->username = $set_username;
$this->password = $set_password;
$this->database = $set_database;
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$database")or die("cannot select DB");
}
}
$connect = new mySQL();
$connect -> connect('localhost', 'user', 'pass', 'database1');
$settings_query = mysql_query("SELECT * FROM settings");
$settings = mysql_fetch_array($settings_query);
echo $settings['title'];
?>
我只看到我的页面上显示“无法连接”。