本文實例講述了YII Framework學習之request與response用法。分享給大家供大家參考，具體如下：
YII中提供了CHttpRequest，封裝了請求常用的方法。具體代碼如下：
class CHttpRequest extends CApplicationComponent
{
public $enableCookieValidation=false;
public $enableCsrfValidation=false;
public $csrfTokenName='YII_CSRF_TOKEN';
public $csrfCookie;
private $_requestUri;
private $_pathInfo;
private $_scriptFile;
private $_scriptUrl;
private $_hostInfo;
private $_baseUrl;
private $_cookies;
private $_preferredLanguage;
private $_csrfToken;
private $_deleteParams;
private $_putParams;
public function init()
{
parent::init();
$this->normalizeRequest();
}
protected function normalizeRequest()
{
// normalize request
if(function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc())
{
if(isset($_GET))
$_GET=$this->stripSlashes($_GET);
if(isset($_POST))
$_POST=$this->stripSlashes($_POST);
if(isset($_REQUEST))
$_REQUEST=$this->stripSlashes($_REQUEST);
if(isset($_COOKIE))
$_COOKIE=$this->stripSlashes($_COOKIE);
}
if($this->enableCsrfValidation)
Yii::app()->attachEventHandler('onBeginRequest',array($this,'validateCsrfToken'));
}
public function stripSlashes(&$data)
{
return is_array($data)?array_map(array($this,'stripSlashes'),$data):stripslashes($data);
}
public function getParam($name,$defaultValue=null)
{
return isset($_GET[$name]) ? $_GET[$name] : (isset($_POST[$name]) ? $_POST[$name] : $defaultValue);
}
public function getQuery($name,$defaultValue=null)
{
return isset($_GET[$name]) ? $_GET[$name] : $defaultValue;
}
public function getPost($name,$defaultValue=null)
{
return isset($_POST[$name]) ? $_POST[$name] : $defaultValue;
}
public function getDelete($name,$defaultValue=null)
{
if($this->_deleteParams===null)
$this->_deleteParams=$this->getIsDeleteRequest() ? $this->getRestParams() : array();
return isset($this->_deleteParams[$name]) ? $this->_deleteParams[$name] : $defaultValue;
}
public function getPut($name,$defaultValue=null)
{
if($this->_putParams===null)
$this->_putParams=$this->getIsPutRequest() ? $this->getRestParams() : array();
return isset($this->_putParams[$name]) ? $this->_putParams[$name] : $defaultValue;
}
protected function getRestParams()
{
$result=array();
if(function_exists('mb_parse_str'))
mb_parse_str(file_get_contents('php://input'), $result);
else
parse_str(file_get_contents('php://input'), $result);
return $result;
}
public function getUrl()
{
return $this->getRequestUri();
}
public function getHostInfo($schema='')
{
if($this->_hostInfo===null)
{
if($secure=$this->getIsSecureConnection())
$http='https';
else
$http='http';
if(isset($_SERVER['HTTP_HOST']))
$this->_hostInfo=$http.'://'.$_SERVER['HTTP_HOST'];
else
{
$this->_hostInfo=$http.'://'.$_SERVER['SERVER_NAME'];
$port=$secure ? $this->getSecurePort() : $this->getPort();
if(($port!==80 && !$secure) || ($port!==443 && $secure))
$this->_hostInfo.=':'.$port;
}
}
if($schema!=='')
{
$secure=$this->getIsSecureConnection();
if($secure && $schema==='https' || !$secure && $schema==='http')
return $this->_hostInfo;
$port=$schema==='https' ? $this->getSecurePort() : $this->getPort();
if($port!==80 && $schema==='http' || $port!==443 && $schema==='https')
$port=':'.$port;
else
$port='';
$pos=strpos($this->_hostInfo,':');
return $schema.substr($this->_hostInfo,$pos,strcspn($this->_hostInfo,':',$pos+1)+1).$port;
}
else
return $this->_hostInfo;
}
public function setHostInfo($value)
{
$this->_hostInfo=rtrim($value,'/');
}
public function getBaseUrl($absolute=false)
{
if($this->_baseUrl===null)
$this->_baseUrl=rtrim(dirname($this->getScriptUrl()),'\\/');
return $absolute ? $this->getHostInfo() . $this->_baseUrl : $this->_baseUrl;
}
public function setBaseUrl($value)
{
$this->_baseUrl=$value;
}
public function getScriptUrl()
{
if($this->_scriptUrl===null)
{
$scriptName=basename($_SERVER['SCRIPT_FILENAME']);
if(basename($_SERVER['SCRIPT_NAME'])===$scriptName)
$this->_scriptUrl=$_SERVER['SCRIPT_NAME'];
else if(basename($_SERVER['PHP_SELF'])===$scriptName)
$this->_scriptUrl=$_SERVER['PHP_SELF'];
else if(isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME'])===$scriptName)
$this->_scriptUrl=$_SERVER['ORIG_SCRIPT_NAME'];
else if(($pos=strpos($_SERVER['PHP_SELF'],'/'.$scriptName))!==false)
$this->_scriptUrl=substr($_SERVER['SCRIPT_NAME'],0,$pos).'/'.$scriptName;
else if(isset($_SERVER['DOCUMENT_ROOT']) && strpos($_SERVER['SCRIPT_FILENAME'],$_SERVER['DOCUMENT_ROOT'])===0)
$this->_scriptUrl=str_replace('\\','/',str_replace($_SERVER['DOCUMENT_ROOT'],'',$_SERVER['SCRIPT_FILENAME']));
else
throw new CException(Yii::t('yii','CHttpRequest is unable to determine the entry script URL.'));
}
return $this->_scriptUrl;
}
public function setScriptUrl($value)
{
$this->_scriptUrl='/'.trim($value,'/');
}
public function getPathInfo()
{
if($this->_pathInfo===null)
{
$pathInfo=$this->getRequestUri();
if(($pos=strpos($pathInfo,'?'))!==false)
$pathInfo=substr($pathInfo,0,$pos);
$pathInfo=urldecode($pathInfo);
$scriptUrl=$this->getScriptUrl();
$baseUrl=$this->getBaseUrl();
if(strpos($pathInfo,$scriptUrl)===0)
$pathInfo=substr($pathInfo,strlen($scriptUrl));
else if($baseUrl==='' || strpos($pathInfo,$baseUrl)===0)
$pathInfo=substr($pathInfo,strlen($baseUrl));
else if(strpos($_SERVER['PHP_SELF'],$scriptUrl)===0)
$pathInfo=substr($_SERVER['PHP_SELF'],strlen($scriptUrl));
else
throw new CException(Yii::t('yii','CHttpRequest is unable to determine the path info of the request.'));
$this->_pathInfo=trim($pathInfo,'/');
}
return $this->_pathInfo;
}
public function getRequestUri()
{
if($this->_requestUri===null)
{
if(isset($_SERVER['HTTP_X_REWRITE_URL'])) // IIS
$this->_requestUri=$_SERVER['HTTP_X_REWRITE_URL'];
else if(isset($_SERVER['REQUEST_URI']))
{
$this->_requestUri=$_SERVER['REQUEST_URI'];
if(isset($_SERVER['HTTP_HOST']))
{
if(strpos($this->_requestUri,$_SERVER['HTTP_HOST'])!==false)
$this->_requestUri=preg_replace('/^\w+:\/\/[^\/]+/','',$this->_requestUri);
}
else
$this->_requestUri=preg_replace('/^(http|https):\/\/[^\/]+/i','',$this->_requestUri);
}
else if(isset($_SERVER['ORIG_PATH_INFO'])) // IIS 5.0 CGI
{
$this->_requestUri=$_SERVER['ORIG_PATH_INFO'];
if(!empty($_SERVER['QUERY_STRING']))
$this->_requestUri.='?'.$_SERVER['QUERY_STRING'];
}
else
throw new CException(Yii::t('yii','CHttpRequest is unable to determine the request URI.'));
}
return $this->_requestUri;
}
public function getQueryString()
{
return isset($_SERVER['QUERY_STRING'])?$_SERVER['QUERY_STRING']:'';
}
public function getIsSecureConnection()
{
return isset($_SERVER['HTTPS']) && !strcasecmp($_SERVER['HTTPS'],'on');
}
public function getRequestType()
{
return strtoupper(isset($_SERVER['REQUEST_METHOD'])?$_SERVER['REQUEST_METHOD']:'GET');
}
public function getIsPostRequest()
{
return isset($_SERVER['REQUEST_METHOD']) && !strcasecmp($_SERVER['REQUEST_METHOD'],'POST');
}
public function getIsDeleteRequest()
{
return isset($_SERVER['REQUEST_METHOD']) && !strcasecmp($_SERVER['REQUEST_METHOD'],'DELETE');
}
public function getIsPutRequest()
{
return isset($_SERVER['REQUEST_METHOD']) && !strcasecmp($_SERVER['REQUEST_METHOD'],'PUT');
}
public function getIsAjaxRequest()
{
return isset($_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH']==='XMLHttpRequest';
}
public function getServerName()
{
return $_SERVER['SERVER_NAME'];
}
public function getServerPort()
{
return $_SERVER['SERVER_PORT'];
}
public function getUrlReferrer()
{
return isset($_SERVER['HTTP_REFERER'])?$_SERVER['HTTP_REFERER']:null;
}
public function getUserAgent()
{
return isset($_SERVER['HTTP_USER_AGENT'])?$_SERVER['HTTP_USER_AGENT']:null;
}
public function getUserHostAddress()
{
return isset($_SERVER['REMOTE_ADDR'])?$_SERVER['REMOTE_ADDR']:'127.0.0.1';
}
public function getUserHost()
{
return isset($_SERVER['REMOTE_HOST'])?$_SERVER['REMOTE_HOST']:null;
}
public function getScriptFile()
{
if($this->_scriptFile!==null)
return $this->_scriptFile;
else
return $this->_scriptFile=realpath($_SERVER['SCRIPT_FILENAME']);
}
public function getBrowser($userAgent=null)
{
return get_browser($userAgent,true);
}
public function getAcceptTypes()
{
return isset($_SERVER['HTTP_ACCEPT'])?$_SERVER['HTTP_ACCEPT']:null;
}
private $_port;
public function getPort()
{
if($this->_port===null)
$this->_port=!$this->getIsSecureConnection() && isset($_SERVER['SERVER_PORT']) ? (int)$_SERVER['SERVER_PORT'] : 80;
return $this->_port;
}
public function setPort($value)
{
$this->_port=(int)$value;
$this->_hostInfo=null;
}
private $_securePort;
public function getSecurePort()
{
if($this->_securePort===null)
$this->_securePort=$this->getIsSecureConnection() && isset($_SERVER['SERVER_PORT']) ? (int)$_SERVER['SERVER_PORT'] : 443;
return $this->_securePort;
}
public function setSecurePort($value)
{
$this->_securePort=(int)$value;
$this->_hostInfo=null;
}
public function getCookies()
{
if($this->_cookies!==null)
return $this->_cookies;
else
return $this->_cookies=new CCookieCollection($this);
}
public function redirect($url,$terminate=true,$statusCode=302)
{
if(strpos($url,'/')===0)
$url=$this->getHostInfo().$url;
header('Location: '.$url, true, $statusCode);
if($terminate)
Yii::app()->end();
}
public function getPreferredLanguage()
{
if($this->_preferredLanguage===null)
{
if(isset($_SERVER['HTTP_ACCEPT_LANGUAGE']) && ($n=preg_match_all('/([\w\-_]+)\s*(;\s*q\s*=\s*(\d*\.\d*))?/',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches))>0)
{
$languages=array();
for($i=0;$i<$n;++$i)
$languages[$matches[1][$i]]=empty($matches[3][$i]) ? 1.0 : floatval($matches[3][$i]);
arsort($languages);
foreach($languages as $language=>$pref)
return $this->_preferredLanguage=CLocale::getCanonicalID($language);
}
return $this->_preferredLanguage=false;
}
return $this->_preferredLanguage;
}
public function sendFile($fileName,$content,$mimeType=null,$terminate=true)
{
if($mimeType===null)
{
if(($mimeType=CFileHelper::getMimeTypeByExtension($fileName))===null)
$mimeType='text/plain';
}
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header("Content-type: $mimeType");
if(ini_get("output_handler")=='')
header('Content-Length: '.(function_exists('mb_strlen') ? mb_strlen($content,'8bit') : strlen($content)));
header("Content-Disposition: attachment; filename=\"$fileName\"");
header('Content-Transfer-Encoding: binary');
if($terminate)
{
// clean up the application first because the file downloading could take long time
// which may cause timeout of some resources (such as DB connection)
Yii::app()->end(0,false);
echo $content;
exit(0);
}
else
echo $content;
}
public function xSendFile($filePath, $options=array())
{
if(!is_file($filePath))
return false;
if(!isset($options['saveName']))
$options['saveName']=basename($filePath);
if(!isset($options['mimeType']))
{
if(($options['mimeType']=CFileHelper::getMimeTypeByExtension($filePath))===null)
$options['mimeType']='text/plain';
}
if(!isset($options['xHeader']))
$options['xHeader']='X-Sendfile';
header('Content-type: '.$options['mimeType']);
header('Content-Disposition: attachment; filename="'.$options['saveName'].'"');
header(trim($options['xHeader']).': '.$filePath);
if(!isset($options['terminate']) || $options['terminate'])
Yii::app()->end();
return true;
}
public function getCsrfToken()
{
if($this->_csrfToken===null)
{
$cookie=$this->getCookies()->itemAt($this->csrfTokenName);
if(!$cookie || ($this->_csrfToken=$cookie->value)==null)
{
$cookie=$this->createCsrfCookie();
$this->_csrfToken=$cookie->value;
$this->getCookies()->add($cookie->name,$cookie);
}
}
return $this->_csrfToken;
}
protected function createCsrfCookie()
{
$cookie=new CHttpCookie($this->csrfTokenName,sha1(uniqid(mt_rand(),true)));
if(is_array($this->csrfCookie))
{
foreach($this->csrfCookie as $name=>$value)
$cookie->$name=$value;
}
return $cookie;
}
public function validateCsrfToken($event)
{
if($this->getIsPostRequest())
{
// only validate POST requests
$cookies=$this->getCookies();
if($cookies->contains($this->csrfTokenName) && isset($_POST[$this->csrfTokenName]))
{
$tokenFromCookie=$cookies->itemAt($this->csrfTokenName)->value;
$tokenFromPost=$_POST[$this->csrfTokenName];
$valid=$tokenFromCookie===$tokenFromPost;
}
else
$valid=false;
if(!$valid)
throw new CHttpException(400,Yii::t('yii','The CSRF token could not be verified.'));
}
}
}
request操作的相關方法，一目了然。
public function init()
{
parent::init();
$this->normalizeRequest();
}
protected function normalizeRequest()
{
// normalize request
if(function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc())
{
if(isset($_GET))
$_GET=$this->stripSlashes($_GET);
if(isset($_POST))
$_POST=$this->stripSlashes($_POST);
if(isset($_REQUEST))
$_REQUEST=$this->stripSlashes($_REQUEST);
if(isset($_COOKIE))
$_COOKIE=$this->stripSlashes($_COOKIE);
}
if($this->enableCsrfValidation)
Yii::app()->attachEventHandler('onBeginRequest',array($this,'validateCsrfToken'));
}
public function stripSlashes(&$data)
{
return is_array($data)?array_map(array($this,'stripSlashes'),$data):stripslashes($data);
}
可以看到yii對$_GET\$_POST\$_REQUEST\$_COOKIE進行了必要的過濾處理，所以可以放心的使用數據。
常用的有如下方法：
獲取get參數
public function getParam($name,$defaultValue=null)
獲取get參數
public function getQuery($name,$defaultValue=null)
獲取post數據
public function getPost($name,$defaultValue=null)
獲取請求的url
public function getUrl()
獲取主機信息
public function getHostInfo($schema='')
設置
public function setHostInfo($value)
獲取根目錄
public function getBaseUrl($absolute=false)
獲取當前url
public function getScriptUrl()
獲取請求的url
public function getRequestUri()
獲取querystring
public function getQueryString()
判斷是否是https
public function getIsSecureConnection()
獲取請求類型
public function getRequestType()
是否是post請求
public function getIsPostRequest()
是否是ajax請求
public function getIsAjaxRequest()
獲取服務器名稱
public function getServerName()
獲取服務端口
public function getServerPort()
獲取引用路徑
public function getUrlReferrer()
獲取用戶ip地址
public function getUserHostAddress()
獲取用戶主機名稱
public function getUserHost()
獲取執行腳本名稱
public function getScriptFile()
獲取cookie
public function getCookies()
重定向
public function redirect($url,$terminate=true,$statusCode=302)
設置下載文件頭
public function sendFile($fileName,$content,$mimeType=null,$terminate=true)
{
if($mimeType===null)
{
if(($mimeType=CFileHelper::getMimeTypeByExtension($fileName))===null)
$mimeType='text/plain';
}
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header("Content-type: $mimeType");
if(ini_get("output_handler")=='')
header('Content-Length: '.(function_exists('mb_strlen') ? mb_strlen($content,'8bit') : strlen($content)));
header("Content-Disposition: attachment; filename=\"$fileName\"");
header('Content-Transfer-Encoding: binary');
if($terminate)
{
// clean up the application first because the file downloading could take long time
// which may cause timeout of some resources (such as DB connection)
Yii::app()->end(0,false);
echo $content;
exit(0);
}
else
echo $content;
}
public function xSendFile($filePath, $options=array())
{
if(!is_file($filePath))
return false;
if(!isset($options['saveName']))
$options['saveName']=basename($filePath);
if(!isset($options['mimeType']))
{
if(($options['mimeType']=CFileHelper::getMimeTypeByExtension($filePath))===null)
$options['mimeType']='text/plain';
}
if(!isset($options['xHeader']))
$options['xHeader']='X-Sendfile';
header('Content-type: '.$options['mimeType']);
header('Content-Disposition: attachment; filename="'.$options['saveName'].'"');
header(trim($options['xHeader']).': '.$filePath);
if(!isset($options['terminate']) || $options['terminate'])
Yii::app()->end();
return true;
}
為了防止csrf，yii提供了相應的方法
（
CSRF（Cross-site request forgery），中文名稱：跨站請求偽造，也被稱為：one click attack/session riding，縮寫為：CSRF/XSRF。
《CSRF的攻擊方式詳解 黑客必備知識》
）
public function getCsrfToken()
{
if($this->_csrfToken===null)
{
$cookie=$this->getCookies()->itemAt($this->csrfTokenName);
if(!$cookie || ($this->_csrfToken=$cookie->value)==null)
{
$cookie=$this->createCsrfCookie();
$this->_csrfToken=$cookie->value;
$this->getCookies()->add($cookie->name,$cookie);
}
}
return $this->_csrfToken;
}
protected function createCsrfCookie()
{
$cookie=new CHttpCookie($this->csrfTokenName,sha1(uniqid(mt_rand(),true)));
if(is_array($this->csrfCookie))
{
foreach($this->csrfCookie as $name=>$value)
$cookie->$name=$value;
}
return $cookie;
}
public function validateCsrfToken($event)
{
if($this->getIsPostRequest())
{
// only validate POST requests
$cookies=$this->getCookies();
if($cookies->contains($this->csrfTokenName) && isset($_POST[$this->csrfTokenName]))
{
$tokenFromCookie=$cookies->itemAt($this->csrfTokenName)->value;
$tokenFromPost=$_POST[$this->csrfTokenName];
$valid=$tokenFromCookie===$tokenFromPost;
}
else
$valid=false;
if(!$valid)
throw new CHttpException(400,Yii::t('yii','The CSRF token could not be verified.'));
}
}
對於$_GET的使用，不僅僅可以使用$_GET和以上提供的相關方法，在action中，可以綁定到action的方法參數。
http://www.yiiframework.com/doc/guide/1.1/zh_cn/basics.controller
這裡就一並羅列官方給出的說明。
從版本 1.1.4 開始，Yii 提供了對自動動作參數綁定的支持。 就是說，控制器動作可以定義命名的參數，參數的值將由 Yii 自動從 $_GET 填充。
為了詳細說明此功能，假設我們需要為 PostController 寫一個 create 動作。此動作需要兩個參數：
category: 一個整數，代表帖子（post）要發表在的那個分類的ID。
language: 一個字符串，代表帖子所使用的語言代碼。
從 $_GET 中提取參數時，我們可以不再下面這種無聊的代碼了：
class PostController extends CController
{
public function actionCreate()
{
if(isset($_GET['category']))
$category=(int)$_GET['category'];
else
throw new CHttpException(404,'invalid request');
if(isset($_GET['language']))
$language=$_GET['language'];
else
$language='en';
// ... fun code starts here ...
}
}
現在使用動作參數功能，我們可以更輕松的完成任務：
class PostController extends CController
{
public function actionCreate($category, $language='en')
{
$category=(int)$category;
// ... fun code starts here ...
}
}
注意我們在動作方法 actionCreate 中添加了兩個參數。 這些參數的名字必須和我們想要從 $_GET 中提取的名字一致。 當用戶沒有在請求中指定 $language 參數時，這個參數會使用默認值 en 。 由於 $category 沒有默認值，如果用戶沒有在 $_GET 中提供 category 參數， 將會自動拋出一個 CHttpException (錯誤代碼 400) 異常。 Starting from version 1.1.5, Yii also supports array type detection for action parameters. This is done by PHP type hinting using the syntax like the following:
class PostController extends CController
{
public function actionCreate(array $categories)
{
// Yii will make sure $categories be an array
}
}
That is, we add the keyword array in front of $categories in the method parameter declaration. By doing so, if $_GET['categories'] is a simple string, it will be converted into an array consisting of that string.
Note: If a parameter is declared without the array type hint, it means the parameter must be a scalar (i.e., not an array). In this case, passing in an array parameter via $_GET would cause an HTTP exception.
request的使用你只要保持和以前在php中的使用方式一樣，在yii中是不會出錯的
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希望本文所述對大家基於Yii框架的PHP程序設計有所幫助。
