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PHP Switching between pages

I've created a method that grabs the content of the address bar, dissects it, and calls the correct class to be executed.

Read the comments above the method to follow the code.


<?php
class Main {
/**
* Displays the desired page
* Grabs the $_GET['page'] variable and separates out the content
* Example of a link
* index.php?page=views-tire_shipments_item_number_packing_slips&type=0
* $_GET['page'] is split at the dash (-)
* The first portion is the folder where the file is located
* The next portion is the file name and once the dashes are removed and
* each first letter capitalized, the class name is also generated.
* In this example,
* the folder would be: views
* the file_location would be: views/tire_shipments_item_number_packing_slips.php
* the class_name would be: TireShipmentsItemNumberPackingSlip
*
* Another example of a link might be
* index.php?page=__classes/login-Authorization
* In this case, the underscores are substituted with ../ to go up a directory
* In this example,
* the folder would be: ../../classes/login
* the file_location would be: ../../classes/login/Authorization.php
* the class_name would be: Authorization
*
* The code will check if the file exists.
* If so, it will include the file
* It proceeds to check if the class exists.
* If so, it will instantiate that class and call the main method
* Since I'm trying to have 1 class per page, each class will have the main method
*
* @return void
*/
public function processRequest() {
if (!isset($_GET['page'])) {
$this->_index_view_obj->main();
return;
}
$page = $_GET["page"];
$page = explode("-", $page);
$folder = $page[0];
$file = $page[1];
// Checks to see if the folder has any underscores which means the file is located up a directory
// i.e. __classes means ../../classes
if (FALSE !== strpos($folder, "_")) {
$level_up = substr_count($folder, "_");
$folder = str_replace("_", "", $folder);
for($i = 0; $i < $level_up; $i++) {
$folder = "../" . $folder;
}
}
$file_location = $folder . "/" . $file . ".php";
$class_method = "main";
// Capitalizes each word after an underscore
// i.e. tire_shipments_item_number_packing_slips will become
// TireShipmentsItemNumberPackingSlip
$class = preg_replace_callback('/(?:^|_)([a-z])/',
function ($m) {
return strtoupper($m[1]);
}, $file);
if (!file_exists($file_location)) {
$this->_error_reporting_obj->main();
return;
}
require_once($file_location);
if (!class_exists($class)) {
$this->_error_reporting_obj->main();
return;
}
$obj = new $class;
$obj->$class_method();
}
}
view raw CreateWebpage.php hosted with ❤ by GitHub

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