《PHP学习：YII Framework学习之request与response用法(基于CHttpRequest响应)》要点：
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相关主题：YII框架
PHP学习本文实例讲述了YII Framework学习之request与response用法.分享给大家供大家参考,具体如下：
PHP学习YII中提供了CHttpRequest,封装了哀求常用的方法.具体代码如下：
PHP学习
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学习request操作的相关办法,一目了然.
PHP学习
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学习可以看到yii对$_GET\$_POST\$_REQUEST\$_COOKIE进行了必要的过滤处理,所以可以放心的使用数据.
PHP学习常用的有如下办法：
PHP学习获取get参数
PHP学习
public function getParam($name,$defaultValue=null)
PHP学习获取get参数
PHP学习
public function getQuery($name,$defaultValue=null)
PHP学习获取post数据
PHP学习
public function getPost($name,$defaultValue=null)
PHP学习获取哀求的url
PHP学习
public function getUrl()
PHP学习获取主机信息
PHP学习
public function getHostInfo($schema='')
PHP学习设置
PHP学习
public function setHostInfo($value)
PHP学习获取根目录
PHP学习
public function getBaseUrl($absolute=false)
PHP学习获取当前url
PHP学习
public function getScriptUrl()
PHP学习获取哀求的url
PHP学习
public function getRequestUri()
PHP学习获取querystring
PHP学习
public function getQueryString()
PHP学习判断是否是https
PHP学习
public function getIsSecureConnection()
PHP学习获取哀求类型
PHP学习
public function getRequestType()
PHP学习是否是post哀求
PHP学习
public function getIsPostRequest()
PHP学习是否是ajax哀求
PHP学习
public function getIsAjaxRequest()
PHP学习获取服务器名称
PHP学习
public function getServerName()
PHP学习获取服务端口
PHP学习
public function getServerPort()
PHP学习获取引用路径
PHP学习
public function getUrlReferrer()
PHP学习获取用户ip地址
PHP学习
public function getUserHostAddress()
PHP学习获取用户主机名称
PHP学习
public function getUserHost()
PHP学习获取执行脚本名称
PHP学习
public function getScriptFile()
PHP学习获取cookie
PHP学习
public function getCookies()
PHP学习重定向
PHP学习
public function redirect($url,$terminate=true,$statusCode=302)
PHP学习设置下载文件头
PHP学习
public function sendFile($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']) || $options['terminate'])
Yii::app()->end();
return true;
}
PHP学习为了防止csrf,yii提供了相应的方法
(
CSRF(Cross-site request forgery),中文名称：跨站哀求伪造,也被称为：one click attack/session riding,缩写为：CSRF/XSRF.
《CSRF的攻击方式详解 黑客必备知识》
)
PHP学习
public function getCsrfToken()
{
if($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学习对于$_GET的使用,不仅仅可以使用$_GET和以上提供的相关办法,在action中,可以绑定到action的办法参数.
PHP学习http://www.yiiframework.com/doc/guide/1.1/zh_cn/basics.controller
PHP学习这里就一并罗列官方给出的说明.
PHP学习从版本 1.1.4 开始,Yii 提供了对自动动作参数绑定的支持. 就是说,控制器动作可以定义命名的参数,参数的值将由 Yii 自动从 $_GET 填充.
PHP学习为了详细说明此功能,假设我们需要为 PostController 写一个 create 动作.此动作需要两个参数：
PHP学习category: 一个整数,代表帖子(post)要颁发在的那个分类的ID.
language: 一个字符串,代表帖子所使用的语言代码.
从 $_GET 中提取参数时,我们可以不再下面这种无聊的代码了：
PHP学习
class PostController extends CController
{
public function actionCreate()
{
if(isset($_GET['category']))
$category=(int)$_GET['category'];
else
throw new CHttpException(404,'invalid request');
if(isset($_GET['language']))
$language=$_GET['language'];
else
$language='en';
// ... fun code starts here ...
}
}
PHP学习现在使用动作参数功能,我们可以更轻松的完成任务：
PHP学习
class PostController extends CController
{
public function actionCreate($category, $language='en')
{
$category=(int)$category;
// ... fun code starts here ...
}
}
PHP学习注意我们在动作方法 actionCreate 中添加了两个参数. 这些参数的名字必须和我们想要从 $_GET 中提取的名字一致. 当用户没有在哀求中指定 $language 参数时,这个参数会使用默认值 en . 由于 $category 没有默认值,如果用户没有在 $_GET 中提供 category 参数, 将会自动抛出一个 CHttpException (错误代码 400) 异常. 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学习
class PostController extends CController
{
public function actionCreate(array $categories)
{
// Yii will make sure $categories be an array
}
}
PHP学习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学习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学习request的使用你只要保持和以前在php中的使用方式一样,在yii中是不会出错的
PHP学习更多关于Yii相关内容感兴趣的读者可查看本站专题：《Yii框架入门及常用技巧总结》、《php优秀开发框架总结》、《smarty模板入门基础教程》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
PHP学习希望本文所述对大家基于Yii框架的PHP程序设计有所赞助.
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