yiiapp/components/UserIdentity.php 用户验证

<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 * 用户身份代表身份用户所需要的数据
 * 它包含身份验证方法做了检查，如果所提供的、数据可以标识用户
 */
class UserIdentity extends CUserIdentity
{
	
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 * 用户进行身份验证。
	 * 例如实现确保，如果用户名和密码
	 * 都是“演示”。
	 * 在实际应用中，这将改变进行身份验证
	 * 对某些持久性的用户身份存储（如数据库）。
	 * @返回布尔值是否验证成功。
	 */
	public function authenticate()
	{
		$users=array(
			// username => password
			'demo'=>'demo',
			'admin'=>'admin',
		    'xlc'=>'xlc'
		);
		if(!isset($users[$this->username]))
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		elseif($users[$this->username]!==$this->password)
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		else
			$this->errorCode=self::ERROR_NONE;
		return !$this->errorCode;
	}
}