Use PHP to implement routes similar to the CI framework.

At the front-end time, I wrote an API about the mobile app, which always uses the QUERY_STRING address and distinguishes all the actions based on an act parameter, which makes the developer seem eye-catching. I wanted to rewrite it as "? C = Controller & M = Method & type = 3 & id = 1 ". The M parameter is used to load and instantiate the file, then we can see that the Sina Weibo API routes the address. It also decided to follow suit to address routing. Originally, the CI framework had its own routing effect, but because it was considered to be an API, it wanted to write purely.

The default controller (INDEX) and method (INDEX) are supported ):

Index. php
Index. php/Controller
Index. php/controller/Method
Index. php/controller/method/prarme1/value1
Index. php/controller/method/param1/value1/param2/value2 .....

<? Phpdefine ('module _ dir ','. /classes/'); $ app_path = str_replace ($ _ server ['document _ root'], '', _ file _); $ se_string = str_replace ($ app_path, '', $ _ server ['request _ URI ']); // calculates the index. index of the field after PHP. PHP/controller/methon/ID/3 $ se_string = trim ($ se_string, '/'); // echo $ se_string. '<br>'; // filter $ se_string. $ Ary_url = array ('controller' => 'index', 'method' => 'index', 'pramers' => array ()); // var_dump ($ ary_url); $ ary_se = explode ('/', $ se_string); $ se_count = count ($ ary_se ); // route control if ($ se_count = 1 and $ ary_se [0]! = '') {$ Ary_url ['controller'] = $ ary_se [0];} else if ($ se_count> 1) {// calculate the following parameters, key-value $ ary_url ['controller'] = $ ary_se [0]; $ ary_url ['method'] = $ ary_se [1]; if ($ se_count> 2 and $ se_count % 2! = 0) {// No key-value form die ('parameter error');} else {for ($ I = 2; $ I <$ se_count; $ I = $ I + 2) {$ ary_kv_hash = array (strtolower ($ ary_se [$ I]) =>$ ary_se [$ I + 1]); $ ary_url [pramers] = array_merge ($ ary_url [pramers], $ ary_kv_hash) ;}}$ module_name = $ ary_url ['controller']; $ module_file = module_dir. $ module_name. '. class. PHP '; // echo $ module_file; $ method_name = $ ary_url ['method']; If (file_exists ($ module_file) {include ($ module_file); $ obj_mo Dule = new $ module_name (); // instantiate the module M if (! Method_exists ($ obj_module, $ method_name) {die ('method does not exist');} else {If (is_callable (Array ($ obj_module, $ method_name ))) {// whether the method can be called // var_dump ($ ary_url [pramers]); $ get_return = $ obj_module-> $ method_name ($ ary_url [pramers]); // execute method A and pass the array of the key-value parameter to if (! Is_null ($ get_return) {// var_dump ($ get_return);} else {die ('this method cannot be called ');}}} else {die ('module file does not exist') ;}?>