理解PHP中的MVC編程之MVC框架簡介

1、MVC？】、Controller”諧調(diào)地組成一個簡單應(yīng)用程序的概念。一輛汽車就是一個在現(xiàn)實生活中格外好的 MVC 例子。我們看車都看兩個 View顯示局部：內(nèi)部和外部。而這Controller把握者：司機。剎車系統(tǒng)、方向盤和其他操那里取得把握方法然后應(yīng)用到內(nèi)部和外觀View。MVC】單獨的把握器如index.php用來把握全部建立在參數(shù)懇求根底上的框架內(nèi)應(yīng)最小程度上GETfoofoo:barbar做的好處有：一個對應(yīng)全部應(yīng)用程序的接口合并并重復(fù)使用代碼【為什么要創(chuàng)立作者自己的 MVC 框架？】PHPMVCSolarPHP5Cake，PHPRoRRuby on RailsRuby。我自己對這兩個

2、框架都有一些PEAR，SmartyCakePaul。這些問題可能并不會讓你否認(rèn)它們，它們?！纠戏绞健縯emplate.txt件，它看起來像這樣： HYPERLINK “ :/ 轉(zhuǎn)載請注明出處?phprequire_once(”config.php”); / Other requires, DB info, etc.$APP_DB = ”mydb”;$APP_REQUIRE_LOGIN = false; / Set to true if script requires login$APP_TEMPLATE_FILE = ”foo.php”; / Smarty template$APP_TITLE

3、 = ”My Application”;if ($APP_REQUIRE_LOGIN = true) if (!isset($_SESSION”userID”) header(“Location: /path/to/login.php“);exit;$db = DB:connect(”mysql:/”.$DB_USER.”:”.$DB_PASS.”localhost/”.$APP_DB);if (!PEAR:isError($db) $db-setFetchMode(DB_FETCHMODE_ASSOC); else die($db-getMessage);/ Put your logic h

4、ere/ Output the templateinclude_once(APP_TEMPLATE_PATH.”/header.php”); include_once(APP_TEMPLATE_PATH.”/”.$APP_TEMPLATE_FILE);include_once(APP_TEMPLATE_PATH.”/footer.php”);?一個應(yīng)用程序都能適用于這個處理方法，比方我可以簡潔地將 template.txt 拷密的處理方法存在一些嚴(yán)峻的缺點：HTML、一些狀況下XMLSOAP，我該怎么辦？IMAPLDAP 包括編輯、升級和刪除？我該如何處理多級驗證vs.？我該如何啟用輸出緩存？

5、 HYPERLINK “ :/ 轉(zhuǎn)載請注明出處【方式】MVC碼：?phpclass myapp extends FR_Auth_Userpublic functionconstructparent:construct;public functiondefault/ Do something herepublic function delete public functiondestructparent:destruct;?或者輸出任何其他信息。把握器把握了全部的一切。LDAP，F(xiàn)R_Auth_LDAP。把握器可以識別某些輸出方法比方$_GET”output”PDFSOAPdel是理所固然的，但

6、是把握器同樣可以把握一局部緩存。但是一旦你轉(zhuǎn)換到了這樣一個概念，那么要轉(zhuǎn)回去將是件相當(dāng)困難的事情?！窘⒌讓印縋EARPEAR_ErrorPHP5類“Exception” 取代了 PEAR_ErrorPEAR_ErrorExceptionMVCException不能傳回錯誤。PEAR序類的層次看起來會像這樣：setFrom，toArray-FR_Object_DB 是一個小層面，給子類供給數(shù)據(jù)庫鏈接等功能-FR_Module又稱模塊、模型等等的底層類-FR_AuthFR_Auth_User 是一個驗證類，用來驗證全部需要驗證用戶是否登陸的模塊FR_Auth_No 是全部不需要驗證的模塊的“假驗

7、證類”-FR_Presenter 是全部用來處理載入和顯示應(yīng)用的底層類-FR_Presenter_SmartySmarty譯者注：這清楚就是打廣告嘛應(yīng)用程序并給他們除錯RESTMVCFR_ModuleFR_Presenter【代碼標(biāo)準(zhǔn)】或者你自己好好爭辯或思考一下代碼標(biāo)準(zhǔn)。MVC 編程的整體思想圍圍著兩點：代碼的可再利用性削減偶合和代碼的標(biāo)準(zhǔn)化。我推舉至少應(yīng)當(dāng)考慮到如下幾點：根底類的時候。定制一個標(biāo)準(zhǔn)前綴，用在全部的函數(shù)、類和全局變量上。不走運的是，PHP不支持“namespace命名空間”。所以要想避開混淆變量名和發(fā)生的沖突，“FR_”作為這樣的前綴?！揪帉懙讓印? config.phpin

8、dex.php includes/ Auth.php Auth/ No.php User.php Module.phpObject.phpObject/ DB.phpPresenter.phpPresenter/ common.php debug.php smarty.php Smarty/ modules/ example/ config.php example.phptpl/ example.tpltpl/ default/ cache/ config/templates/ templates_c/到很大的提升。includes都用一個配置文件，至少一個模塊文件和一個模板文件。全部的模塊包

9、含在modulestplconfig.php中樞配置文件，包含全部的全局配置變量。index.php把握器，在接下來的一篇文章中會具體表達(dá)。 object.php全部根底類的底層類，供給絕大局部類需要的功能。FR_Object_DB共同的特性。你完全可以把鏈接數(shù)據(jù)庫的功能放進(jìn)FR_Object，但是并不是全部FR_Object_DB爭辯它。?phprequire_once(”Log.php”);/*FR_Object*The base object class for most of the classes that we use in ourframework.Provides basic

10、logging and set/get functionality.*author Joe Stump HYPERLINK “mailto:“ package Framework*/abstract class FR_Object/*$log*var mixed $log Instance of PEAR Log*/protected $log;/*$me*var mixed $me Instance of ReflectionClass*/protected $me;/* construct*author Joe Stump HYPERLINK “mailto:“ access public

11、*/public functionconstruct$this-log = Log:factory(”file”,FR_LOG_FILE);$this-me = new ReflectionClass($this);/*setFrom*author Joe Stump HYPERLINK “mailto:“ access publicparam mixed $data Array of variables to assign to instancereturn void*/public function setFrom($data)if (is_array($data) & count($da

12、ta) $valid = get_class_vars(get_class($this);foreach ($valid as $var = $val) if (isset($data$var) $this-$var = $data$var;/*toArray*author Joe Stump HYPERLINK “mailto:“ access publicreturn mixed Array of member variables keyed by variable name*/public function toArray$defaults = $this-me-getDefaultPr

13、operties;$return = array;foreach ($defaults as $var = $val) if ($this-$var instanceof FR_Object) $return$var = $this-$var-toArray; else $return$var = $this-$var;return $return;/* destruct*authorJoe Stump HYPERLINK “mailto:“ *accesspublic*/returnvoidpublic functiondestructif ($this-log instanceof Log

14、) $this-log-close;?FR_Module的，主要功能是定義一個根本的驗證類如何工作。FR_Auth_No?phpabstract class FR_Auth extends FR_Module/ construct functionparent:construct;/ / authenticateabstract function authenticate;/ / destruct functionparent:destruct;/ ?module.php全部模塊的心臟?phpabstract class FR_Module extends FR_Object_Web/ pro

15、perties/*$presenter*Used in FR_Presenter:factory to determine which presentation(view)class should be used for the module.*author Joe Stump HYPERLINK “mailto:“ var string $presentersee FR_Presenter, FR_Presenter_common, FR_Presenter_smarty*/public $presenter = ”smarty”;/*$data*ew.Data set by the mod

16、ule that will eventually be passed to the vi*author Joe Stump HYPERLINK “mailto:“ var mixed $data Module datasee FR_Module:set, FR_Module:getData*/protected $data = array;/*$name*author Joe Stump HYPERLINK “mailto:“ var string $name Name of module class*/public $name;/*$tplFile*author Joe Stump HYPE

17、RLINK “mailto:“ var string $tplFile Name of template filesee FR_Presenter_smarty*/public $tplFile;/*$moduleName*author Joe Stump HYPERLINK “mailto:“ var string $moduleName Name of requested modulesee FR_Presenter_smarty*/public $moduleName = null;/*$TemplateFile*author Joe Stump HYPERLINK “mailto:“

18、var string $TemplateFile Name of outer template*/public $TemplateFile = null;/ / construct/* construct*author Joe Stump HYPERLINK “mailto:“ */public functionconstructparent:construct;$this-name = $this-me-getName;$this-tplFile = $this-name.”.tpl”;/ / defaultfied/* default*This function is ran by the

19、 controller if an event is not speciin the user”s request.*author Joe Stump HYPERLINK “mailto:“ */abstract public functiondefault;/ / set($var,$val)/*set*Set data for your module. This will eventually be passed toe thepresenter class via FR_Module:getData.*author Joe Stump HYPERLINK “mailto:“ param

20、string $var Name of variableparam mixed $val Value of variablereturn voidsee FR_Module:getData*/protected function set($var,$val) $this-data$var = $val;/ / getData/*getData*Returns module”s data.*author Joe Stump HYPERLINK “mailto:“ return mixedsee FR_Presenter_common*/public function getDatareturn

21、$this-data;/ / isValid($module)by rk”s/*isValid*Determines if $module is a valid framework module. This is usedthe controller to determine if the module fits into our framewomold. If it extends from both FR_Module and FR_Auth then it should begood to run.*author Joe Stump HYPERLINK “mailto:“ staticparam mixed $modulereturn bool*/public static function isValid($module)return (is_object($module) &$module instanceof FR_Module &$module instanceof FR_Auth);/ / destructpublic functiondestructparent:destruct;/ ?presenter.php表述層的核心。?phpclass FR_Presenter/ factory($type,FR_Module $module)/*