What would be the best, simplest way to code this: I have a php document that gets most of the page requests (set up in routes config, using code igniter framework) and depending on the uri i want to show the user different content. Example:

http: // domain.tld/2010/  
Should show one type of content

http: // domain.tld/2010-nov/  
should show another type of content

http: // domain.tld/2010-nov-10/  
should show yet another type of content

http: // domain.tld/2010-nov-10-blog-post-title/  
should show once again another type of content

Everything else should be treated as if is a product, example:
http: // domain.tld/light-bulb/
and if such a product doesnt exist, its a 404

Aşağıda şu anda var kodu, ama yol çok dağınık olduğunu hissediyorum. Daha basit ve daha etkili hale getirmek için nasıl bir öneri? (Burada doğru biçimlendirilmiş almaya çalıştı ama düzgün hizalamak için kodu almak için biraz zor görünebilir, bir özür)

Regards, Jason
(had to add spaces in all my urls here because im new and not allowed to post that many urls)

$val is the uri (/2010-nov.......)

    function show_what($val){
 $arr=array("jan"=>01,"feb"=>02,"mar"=>03,"apr"=>04,"may"=>05,"jun"=>06,"jul"=>07,"aug"=>08,"sep"=>09,"oct"=>10,"nov"=>11,"dec"=>12);
 // first check to see if the uri starts with a year (4 digits)
 if(is_int((int)substr($val,0,4)) && (int)substr($val,0,4)!=0){
  // Get all posts for specified YEAR
  if(strlen($val)==4){
   // Show all blog posts for specified year
   // example: http: // domain.tld/2010/

  // Get all posts for specified YEAR and MONTH
  }elseif(strlen($val)==8 && substr($val,4,1)=="-" && array_key_exists(substr($val,5,3),$arr)){
   // show all blog posts for specified year and month
   // example: http: // domain.tld/2010-nov/

  // Get all posts for specified YEAR, MONTH and DAY OR! get specified post
  }elseif(strlen($val)>=11 && substr($val,4,1)=="-" && array_key_exists(substr($val,5,3),$arr) && substr($val,8,1)=="-" && is_int((int)substr($val,9,2)) && (int)substr($val,9,2)!=0){

   // Get all posts for specified YEAR, MONTH and DAY
   if(strlen($val)==11){
    // show all blog posts for specified year, month and day
    // example: http: // domain.tld/2010-nov-10/

   // Get specified post
   }elseif(substr($val,11,1)=="-"){
    // show specified post or 404
    // example: http: // domain.tld/2010-nov-10-blog-post-title/
   }else{
    // "Not a valid article url<Br/>";
    // example: http: // domain.tld/2010-nov-10there-is-a-dash-missing-after-day/
   }
  }else{
   // 404, not a real date
  }
 }else{
  // show product with current uri or if it doesnt exist, 404.
 }
}