PHP confirm password along with regexp validation?

PHP与正则表达式验证确认密码？

In the confirm password box, confirm your password.

请重新输入您的密码以确认其正确性。

"Password" and "Confirm password" fields must match!

“密码”与“确认密码”域必须完全一致！

The password and Confirm password fields do not match.

所提供的密码和确认密码不匹配。

Enter your user name, password and confirm password then click Next.

输入您的用户名，密码和确认密码，然后单击下一步。