PHP框架三（视图）
上一节我们简单地实现了控制器。这一节我们实现一下视图。
这个视图文件非常简单。主要利用的就是ob_start() ,ob_get_content();这个文件位于includes文件夹内
view.php
<?phpclass view{ //视图类型 default / wap public static $view_type = null; public function __construct(){ ob_start(); } public function finish(){ $content = ob_get_contents(); return $content; } public static function set_view_type(){ switch(true){ case stripos($_SERVER['HTTP_USER_AGENT'], 'Windows CE') !== FALSE : self::$view_type = 'wap'; break; default : self::$view_type = 'default'; } } public static function show($location , $param = array()){ if(is_null(self::$view_type)){ self::set_view_type(); } $view = SIMPLE_PATH . '/view/' . self::$view_type . '/' . $location; extract($param, EXTR_OVERWRITE); ob_start(); file_exists($view) ? require $view : exit($view . ' 不存在'); $content = ob_get_contents(); return $content; }}对于OB函数，我们可以简单地认为，在PHP编译之后，它不会立刻返回到页面，而是先放到缓冲区。
上述视图只是做了一个简单的实现，如果我们要扩展它，可以完善set_view_type()方法，也可以增加缓存，还可以增加模板的支持。
具体实现我会在以后的章节加上，今天我们试着使用一下这个VIEW。
还是昨天controller文件夹下的index.php 文件
<?phpclass index{ public function demo(){ view::show('index.htm' , array('message' => 'HELLO WORLD')); }}然后再在view文件夹内新建一个default文件夹，再在新建一个index.htm
<html><head><title></title></head><body> <?php echo $message;?></body></html>
我们运行站点，便可以看到结果，“HELLO WORLD”。
我觉得这个结果，便是每个程序员对新的思想的一种见证。
如果在这个文件中，你还想插入头部，或尾部，只要再新建一个head.htm。然后再在index.htm中加入
<html><head><title></title></head><body> <?php echo $message; view::show('head.htm');?></body></html>就可以实现公共部分的加入了。
至此，我们这个小型的视图类就实现了。
大家可自行去实验，如果不行，我们再交流。
下一节就是我以前在BLOG里介绍的DAO层，即MODULES。
PHP Performance Tuning for High Traffic WebsitesMay 14, 2025 am 12:13 AMThesecrettokeepingaPHP-poweredwebsiterunningsmoothlyunderheavyloadinvolvesseveralkeystrategies:1)ImplementopcodecachingwithOPcachetoreducescriptexecutiontime,2)UsedatabasequerycachingwithRedistolessendatabaseload,3)LeverageCDNslikeCloudflareforservin
Dependency Injection in PHP: Code Examples for BeginnersMay 14, 2025 am 12:08 AMYou should care about DependencyInjection(DI) because it makes your code clearer and easier to maintain. 1) DI makes it more modular by decoupling classes, 2) improves the convenience of testing and code flexibility, 3) Use DI containers to manage complex dependencies, but pay attention to performance impact and circular dependencies, 4) The best practice is to rely on abstract interfaces to achieve loose coupling.
PHP Performance: is it possible to optimize the application?May 14, 2025 am 12:04 AMYes,optimizingaPHPapplicationispossibleandessential.1)ImplementcachingusingAPCutoreducedatabaseload.2)Optimizedatabaseswithindexing,efficientqueries,andconnectionpooling.3)Enhancecodewithbuilt-infunctions,avoidingglobalvariables,andusingopcodecaching
PHP Performance Optimization: The Ultimate GuideMay 14, 2025 am 12:02 AMThekeystrategiestosignificantlyboostPHPapplicationperformanceare:1)UseopcodecachinglikeOPcachetoreduceexecutiontime,2)Optimizedatabaseinteractionswithpreparedstatementsandproperindexing,3)ConfigurewebserverslikeNginxwithPHP-FPMforbetterperformance,4)
PHP Dependency Injection Container: A Quick StartMay 13, 2025 am 12:11 AMAPHPDependencyInjectionContainerisatoolthatmanagesclassdependencies,enhancingcodemodularity,testability,andmaintainability.Itactsasacentralhubforcreatingandinjectingdependencies,thusreducingtightcouplingandeasingunittesting.
Dependency Injection vs. Service Locator in PHPMay 13, 2025 am 12:10 AMSelect DependencyInjection (DI) for large applications, ServiceLocator is suitable for small projects or prototypes. 1) DI improves the testability and modularity of the code through constructor injection. 2) ServiceLocator obtains services through center registration, which is convenient but may lead to an increase in code coupling.
PHP performance optimization strategies.May 13, 2025 am 12:06 AMPHPapplicationscanbeoptimizedforspeedandefficiencyby:1)enablingopcacheinphp.ini,2)usingpreparedstatementswithPDOfordatabasequeries,3)replacingloopswitharray_filterandarray_mapfordataprocessing,4)configuringNginxasareverseproxy,5)implementingcachingwi
PHP Email Validation: Ensuring Emails Are Sent CorrectlyMay 13, 2025 am 12:06 AMPHPemailvalidationinvolvesthreesteps:1)Formatvalidationusingregularexpressionstochecktheemailformat;2)DNSvalidationtoensurethedomainhasavalidMXrecord;3)SMTPvalidation,themostthoroughmethod,whichchecksifthemailboxexistsbyconnectingtotheSMTPserver.Impl
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
SublimeText3 Chinese version
Chinese version, very easy to use
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
Zend Studio 13.0.1
Powerful PHP integrated development environment
PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
