encode numeric id's in URI/URL's

encode_numeric_ids.php

<?php 

function encode_web_display_url($url_to_encode){
	if ($url_to_encode){
		//boom
		$request = explode('/',urldecode($_SERVER['REQUEST_URI']));
		//loop
		foreach($request as $request_slice){
			if (is_numeric($request_slice)){
				//convert
				$ids[]=base_convert($request_slice,10,36);
			}
		}
		
		$encoded = implode('/',$ids);
			
		return "http://wes.lotvantage.com/r.php/" . $encoded ;
	}else{
		return false;
	}
}

function decode_web_display_url(){
	
	$request = explode('/',$_SERVER['REQUEST_URI']);
	
	//start at 2 if URI schema is DOMAIN/r.php/ID/ID/ID/ID
	for($i=2;$i<count($request);$i++){
		$request_slice = $request[$i];
		if ($request_slice){
			//build
			$ids[]=base_convert($request_slice,36,10);
		}
	}
	
	$encoded = implode('/',$ids);
	
	return "http://wes.lotvantage.com/web_display/view/" . $encoded;
}

	 $url_to_encode = $_REQUEST['url'];
	 
	 if ($url_to_encode){
	 	 //boom
	 	 $request = explode('/',urldecode($_SERVER['REQUEST_URI']));
	 	 //loop
		 foreach($request as $request_slice){
		 	//echo "<p>{$request_slice}</p>".base_convert($request_slice,10,36);
		 	if (is_numeric($request_slice)){
		 		//build
		 		//echo "<p>{$request_slice}</p>".base_convert($request_slice,10,36);
		 		$ids[]=base_convert($request_slice,10,36);
		 	}
		 }
		 
		 $encoded = implode('/',$ids);
		 
		 echo "<a href='http://wes.lotvantage.com/r.php/" . $encoded . "/'>" . $encoded . "</a>";
	 ?>
		 <form>
			 <input name=url value="<?=$encoded;?>">
			 <input type=submit>
		 </form>
	 
		 <?php 
		 	die();
	 }
  
  	//decode
 	$request = explode('/',$_SERVER['REQUEST_URI']);

 	for($i=2;$i<count($request);$i++){
 		$request_slice = $request[$i];
 		if ($request_slice){
			//build
			$ids[]=base_convert($request_slice,36,10);
		}
 	}
	
	$encoded = implode('/',$ids);
	
	echo "<a href='http://wes.lotvantage.com/web_display/view/" . $encoded . "/'>" . $encoded . "</a>";

?>