Revert "model/user.php 新加入的函数通过简单验证"

This reverts commit 772c96b9e60f90cc3753eced7757d0777f5dafa3.
Revert "Revert "model/user.php 新加入的函数通过简单验证""

This reverts commit b19ab44ba6032e3b2eb5843966210b07d12bff32.