PHP Framework Three (View)_PHP Tutorial-PHP Tutorial-php.cn

PHP Framework Three (View)_PHP Tutorial

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Release： 2016-07-13 17:53:08

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This view file is very simple. The main ones used are ob_start() and ob_get_content(); this file is located in the includes folder

view.php

[php]
class view{
//View type 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 . ' does not exist');
         $content = ob_get_contents();
         return $content;
}
}
For the OB function, we can simply think that after PHP is compiled, it will not return to the page immediately, but will be placed in the buffer first.

The above view is just a simple implementation. If we want to extend it, we can improve the set_view_type() method, add cache, and add template support.

I will add the specific implementation in future chapters. Today we try to use this VIEW.

It’s still the index.php file in the controller folder yesterday

[php]

class index{

Public function demo(){
view::show('index.htm', array('message' => 'HELLO WORLD'));
}
}
Then create a new default folder in the view folder, and then create a new index.htm

[html]

echo $message;
?>

We run the site and see the result, "HELLO WORLD".

I think this result is a testimony of every programmer's new ideas. www.2cto.com

If you also want to insert a header or trailer in this file, just create a new head.htm. Then add

to index.htm

[html]

echo $message;
View::show('head.htm');
?>

You can now add the public part.

At this point, our small view class has been implemented.

Everyone can experiment on their own. If it doesn’t work, we can communicate again.

Author: tomyjohn