通过类/对象的PHP多个MySQL连接？

Question

Here's the code I'm trying to make work:

<?php

class database {
    var $connection;
    function database($host,$username,$password,$database){
        $this->connection = mysql_connect($host, $username, $password);
        mysql_select_db($database,$this->connection);
    }
    function query($query){
        $query = mysql_query($query,$this->connection);
        return $query;
    }
}

$db = new database("localhost","root","password","database1");
$db2 = new database("SERVER2","root","password","database2");

$sql = $db->query("SELECT * FROM users WHERE name = 'Yifan' LIMIT 1");
$row = mysql_fetch_assoc($sql);

var_dump($row);

$sql = $db2->query("SELECT * FROM users WHERE name = 'Yifan' LIMIT 1");
$row = mysql_fetch_assoc($sql);

var_dump($row);

?>

So, in case you didn't understand that, I want to have two or more connections to mysql using objects, but the problem is, I get "bool(false)" as the first result, and the correct response for the second one. Any idea on what I'm doing wrong, or if it is even possible? Thanks.

Answer 1

mysql_connect的下一个参数是$ new_link，您可以尝试在其中发送true并查看是否有帮助吗？

$this->connection = mysql_connect($host, $username, $password, true);