Description:
------------
Currently the parse_url function only recognizes ports from 0-65535. Firstly this 
isn't really documented on the site. Secondly, while it is true that valid port 
numbers for http requests are less than 65535 there are other types of URLs which 
have port numbers that can exceed that limit. This is very common in the SMS world 
as the port number is used to indicate short code. Here is an example:

ctpp://ericsson:78325/?carrier=31003&address=2125551212

I don't see any real benefit to limiting the port number, more over the function 
appears to arbitrarily rewrite the port number. So the above example gets reported 
as 12789.

Best case scenario would be to just allow numbers of any size. PHP is understood 
to be loosely type so enforcing type here is inconsistent. At the very least 
document the behavior on the site (I will add post to the function for others). 

Test script:
---------------
<?php
$url = 'ctpp://ericsson:78325/?carrier=31003&address=2125551212';
$parsedURL = parse_url($url);
var_dump($parsedURL);



Expected result:
----------------
array (size=5)
  'scheme' => string 'ctpp' (length=4)
  'host' => string 'ericsson' (length=8)
  'port' => int 78325
  'path' => string '/' (length=1)
  'query' => string 'carrier=31003&address=2125551212' (length=32)

Actual result:
--------------
array (size=5)
  'scheme' => string 'ctpp' (length=4)
  'host' => string 'ericsson' (length=8)
  'port' => int 12789
  'path' => string '/' (length=1)
  'query' => string 'carrier=31003&address=2125551212' (length=32)