《PHP學習：YII Framework學習之request與response用法(基于CHttpRequest響應)》要點：
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相關主題：YII框架
PHP學習本文實例講述了YII Framework學習之request與response用法.分享給大家供大家參考,具體如下：
PHP學習YII中提供了CHttpRequest,封裝了哀求常用的方法.具體代碼如下：
PHP學習
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.'));
}
}
}
PHP學習request操作的相關辦法,一目了然.
PHP學習
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);
}
PHP學習可以看到yii對$_GET\$_POST\$_REQUEST\$_COOKIE進行了必要的過濾處理,所以可以放心的使用數據.
PHP學習常用的有如下辦法：
PHP學習獲取get參數
PHP學習
public function getParam($name,$defaultValue=null)
PHP學習獲取get參數
PHP學習
public function getQuery($name,$defaultValue=null)
PHP學習獲取post數據
PHP學習
public function getPost($name,$defaultValue=null)
PHP學習獲取哀求的url
PHP學習
public function getUrl()
PHP學習獲取主機信息
PHP學習
public function getHostInfo($schema='')
PHP學習設置
PHP學習
public function setHostInfo($value)
PHP學習獲取根目錄
PHP學習
public function getBaseUrl($absolute=false)
PHP學習獲取當前url
PHP學習
public function getScriptUrl()
PHP學習獲取哀求的url
PHP學習
public function getRequestUri()
PHP學習獲取querystring
PHP學習
public function getQueryString()
PHP學習判斷是否是https
PHP學習
public function getIsSecureConnection()
PHP學習獲取哀求類型
PHP學習
public function getRequestType()
PHP學習是否是post哀求
PHP學習
public function getIsPostRequest()
PHP學習是否是ajax哀求
PHP學習
public function getIsAjaxRequest()
PHP學習獲取服務器名稱
PHP學習
public function getServerName()
PHP學習獲取服務端口
PHP學習
public function getServerPort()
PHP學習獲取引用路徑
PHP學習
public function getUrlReferrer()
PHP學習獲取用戶ip地址
PHP學習
public function getUserHostAddress()
PHP學習獲取用戶主機名稱
PHP學習
public function getUserHost()
PHP學習獲取執行腳本名稱
PHP學習
public function getScriptFile()
PHP學習獲取cookie
PHP學習
public function getCookies()
PHP學習重定向
PHP學習
public function redirect($url,$terminate=true,$statusCode=302)
PHP學習設置下載文件頭
PHP學習
public function sendFile($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']) || $options['terminate'])
Yii::app()->end();
return true;
}
PHP學習為了防止csrf,yii提供了相應的方法
(
CSRF(Cross-site request forgery),中文名稱：跨站哀求偽造,也被稱為：one click attack/session riding,縮寫為：CSRF/XSRF.
《CSRF的攻擊方式詳解 黑客必備知識》
)
PHP學習
public function getCsrfToken()
{
if($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.'));
}
}
PHP學習對于$_GET的使用,不僅僅可以使用$_GET和以上提供的相關辦法,在action中,可以綁定到action的辦法參數.
PHP學習http://www.yiiframework.com/doc/guide/1.1/zh_cn/basics.controller
PHP學習這里就一并羅列官方給出的說明.
PHP學習從版本 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.
PHP學習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：
PHP學習category: 一個整數,代表帖子(post)要頒發在的那個分類的ID.
language: 一個字符串,代表帖子所使用的語言代碼.
從 $_GET 中提取參數時,我們可以不再下面這種無聊的代碼了：
PHP學習
class PostController extends CController
{
public function actionCreate()
{
if(isset($_GET['category']))
$category=(int)$_GET['category'];
else
throw new CHttpException(404,'invalid request');
if(isset($_GET['language']))
$language=$_GET['language'];
else
$language='en';
// ... fun code starts here ...
}
}
PHP學習現在使用動作參數功能,我們可以更輕松的完成任務：
PHP學習
class PostController extends CController
{
public function actionCreate($category, $language='en')
{
$category=(int)$category;
// ... fun code starts here ...
}
}
PHP學習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. 當用戶沒有在哀求中指定 $language 參數時,這個參數會使用默認值 en . 由于 $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:
PHP學習
class PostController extends CController
{
public function actionCreate(array $categories)
{
// Yii will make sure $categories be an array
}
}
PHP學習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.
PHP學習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.
PHP學習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
PHP學習更多關于Yii相關內容感興趣的讀者可查看本站專題：《Yii框架入門及常用技巧總結》、《php優秀開發框架總結》、《smarty模板入門基礎教程》、《php日期與時間用法總結》、《php面向對象程序設計入門教程》、《php字符串(string)用法總結》、《php+mysql數據庫操作入門教程》及《php常見數據庫操作技巧匯總》
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