同一个PHP页面连接两个数据库

<?php

/**
 * @author blog.anchen8.net
 * @copyright 2016
 */
    
    $conn1 = mysql_connect("127.0.0.1", "root", "123456"); 
    mysql_select_db("newwww", $conn1); 
    $conn2 = mysql_connect("127.0.0.1", "root", "123456"); 
    mysql_select_db("weixin", $conn2); 
    
    $sql = "select nickname from newwww.zg_user"; 
    $query = mysql_query($sql) or die(mysql_error()); //添加连接$conn1 
    if($query){
        while($row = mysql_fetch_array($query)) {
            echo $row[0]."\n"; 
            break;
        }
        
    }else{
        echo "conn1,else";
    }
    
    $sql = "select * from weixin.member "; 
    $query = mysql_query($sql) or die(mysql_error()); 
    if($query){
        while($row = mysql_fetch_array($query)) {
            echo $row[0]."\n"; 
            break;
        }
        
    }else{
        echo "conn2,else";
    }
    mysql_close($conn1);
    mysql_close($conn2);

?>