How PHP frames are built

How PHP frames are made

index.php Main entry file

require "Init.php";
$control = new Controller ();
$control Run ();
?>
------- --------------------------------------------------------------------------------------

init.php file

if (!defined (' isexist '))
?? exit ("Please run the program from the portal file");
header ("Content-type:text/html;charset=utf-8");
??
if (!defined (' Root_path '))
??//Here is a dynamic declaration, ' \ \ ' is an escaped backslash, the default ' \ ' is the escape character
? ? Define (' Root_path ', str_replace (' \ \ ', '/', dirname (__file__)));?
? require Root_path. ' /a/config.php ';
? require Root_path. ' /a/controller.class.php ';
? require Root_path. ' /a/view.class.php ';
? require Root_path. ' /a/model.class.php ';
??
?>
----------------------------------------------------------------------------------------------

config.php file

if (!defined (' isexist '))
?? exit ("Please run the program from the portal file");
? $C = Array (
? ' Url_mode ' =>1,//url mode, 1 for normal mode, 2 for Path_info mode
? ' Default ' = ' welcome ',//defaults to the controller
? ' Default_action ' = ' index '//default method
? );
?>
-----------------------------------------------------------------------------------------------

controller.class.php file

?

class Controller
{
? Public function Run ()
? {
? $this->analysis ();
?//Start parsing URLs to obtain the requested controller and method
? $control = $_get[' con '];
? $action = $_get[' act '];
? $action = Ucfirst ($action);
?//The path of the controller file is constructed here
? $controlFile = Root_path. '/controllers/'. $control. '. class.php ';
if (!file_exists ($controlFile))//If the file does not exist with a hint error, the introduction
? {?
? Exit ("{$control}.class.php controller does not exist
". " Please check: ". $controlFile." Whether there is
");
? }
? include ($controlFile);
? $class = Ucfirst ($control);//capitalize the first letter of each word in the controller name as the class name of the controller
if (!class_exists ($class))//Determine if the class exists, if there is no prompt error
? {
exit ("{$control controller class not defined in}.class.php". $class);
?}
? $instance = new $class ();//Create an instance otherwise
If (!method_exists ($instance, $action))//Determine if the $action method exists in the instance $instance, the error is not present
? {
? Exit ("Method is not present in the $class class:". $action);
?}
? $instance $action ();
?}
?
?
?
? Protected function Analysis ()
? {
?//$GLOBALS [' C '] [' url_mode '];
? global $C;//contains an array of global configurations, defined in the config.ph file, and the global declaration $c is called external
if ($C [' url_mode '] = = 1)
?//If the URL pattern is 1 then get the controller in get, which means the URL address is this [url=http://localhost/index.php?c]http://localhost/index.php?c[/url ]= Controller &a= Method
? {
? $control =!empty ($_get[' con ')) trim ($_get[' con '): ";
? $action =!empty ($_get[' act ') "Trim ($_get[' act ']): ';
?}
? else if ($C [' url_mode '] = = 2)//If 2 then use Path_info mode, which is the URL address?? [Url=http://localhost/index.php/]http://localhost/index.php/[/url] Controller/method/other parameters
? {
if (isset ($_server[' path_info ') )
? {
//$_server[' path_info ']url The path information after the file name in the address, not good understanding, to see the example
?//For example your current URL is [Url=http://www.php100.com/index.php]http://www.php100.com/index.php[/url] then your $_server[' PATH_ INFO '] is empty.
?//But if the URL is [Url=http://www.php100.com/index.php/abc/123]http://www.php100.com/index.php/abc/123[/url]
The value of the current $_server[' path_info '] will be the content after the index.php file name/abc/123/
? $path = Trim ($_server[' path_info '), '/');
? $paths = Explode ('/', $path);
? $control = Array_shift ($paths);
? $action = Array_shift ($paths);
?}
?}
?//This determines whether the value of the controller is empty, if it is empty, use the default
? $_get[' con '] =!empty ($control)? $control: $C [' DEFAULT '];
?//the same as above
? $_get[' act '] =!empty ($action)? $action: $C [' default_action '];
?}
}
?>
--------------------------------------------------------------------------------------------------

welcome.class.php file

?

? class Welcome
? {
?? function Index ()
? ? {
?? Echo ' Welcome to use this CMS system ';
? ?}
?? function Run ()
? ? {
?? echo ' Hello ';
? ?}
? ?
?? function Show ()
? ? {
?? Echo ' method name show ';
? ?}
? }

?>

?

Transferred from: http://blog.sina.com.cn/s/blog_6ec912d80101916t.html

