php连接mysql密码存放位置,php – Mysql密码已过期 无法连接

我刚刚擦了我的Mac，并重新安装了El Capitan。我现在努力连接到Mysql。经过一个Web服务器设置过程，我创建了一个简单的PHP测试文件：

$conn = new mysqli("127.0.0.1", "root", "xxxxxxxx");

if ($conn->connect_error) echo "Connection failed: " . $conn->connect_error;

else echo "Connected successfully";

phpinfo();

?>

当我运行它，我得到这个错误：

Warning: mysqli::mysqli(): (HY000/1862): Your password has expired. To log in you must change it using a client that supports expired passwords. in /Users/rich/Documents/DESIGN/test/index.php on line 3

Connection failed: Your password has expired. To log in you must change it using a client that supports expired passwords.

我从来没有见过来自连接的响应。如果我无法连接，我该如何解决？

编辑

在终端我输入命令：

mysql -u root -p

这问我我的密码(当前一个)，我放入。我现在有访问mysql命令，但任何我尝试导致此错误：

ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

如何使用ALTER USER重置密码？