note 86115 added to function.parse-url

Another shot at trying to find a better parser. I noticed that the laulibrius/theoriginalmarksimpson functions didn't quite handle the URL for the page they were displayed on. For my mirror, ca3, this is
  http://ca3.php.net/manual/en/function.parse-url.php

Run it through the function and it parses to
  scheme => http
  login =>
  pass =>
  host => ca3.php.net
  ip =>
  subdomain => ca3
  domain => php.
  extension => net
  port =>
  path => /manual/en/function.parse
  file => function.parse
that is, the file name gets a bit mangled

Rather than tweak the function's regular expression yet again, I opted to adapt a RegExp that served me well in Javascript:

function j_parseUrl($url) {
  $r  = "(?:([a-z0-9+-._]+)://)?";
  $r .= "(?:";
  $r .=   "(?:((?:[a-z0-9-._~!$&'()*+,;=:]|%[0-9a-f]{2})*)@)?";
  $r .=   "((?:[a-z0-9-._~!$&'()*+,;=]|%[0-9a-f]{2})*)";
  $r .=   "(?::(\d*))?";
  $r .=   "(/(?:[a-z0-9-._~!$&'()*+,;=:@/]|%[0-9a-f]{2})*)?";
  $r .=   "|";
  $r .=   "(/?";
  $r .=     "(?:[a-z0-9-._~!$&'()*+,;=:@]|%[0-9a-f]{2})+";
  $r .=     "(?:[a-z0-9-._~!$&'()*+,;=:@\/]|%[0-9a-f]{2})*";
  $r .=    ")?";
  $r .= ")";
  $r .= "(?:\?((?:[a-z0-9-._~!$&'()*+,;=:\/?@]|%[0-9a-f]{2})*))?";
  $r .= "(?:#((?:[a-z0-9-._~!$&'()*+,;=:\/?@]|%[0-9a-f]{2})*))?";
  preg_match("`$r`i", $url, $match);
  $parts = array(
            "scheme"=>'',
            "userinfo"=>'',
            "authority"=>'',
            "host"=> '',
            "port"=>'',
            "path"=>'',
            "query"=>'',
            "fragment"=>'');
  switch (count ($match)) {
    case 9: $parts['fragment'] = $match[8];
    case 8: $parts['query'] = $match[7];
    case 7: $parts['path'] =  $match[6];
    case 6: $parts['path'] =  $match[5] . $parts['path'];
    case 5: $parts['port'] =  $match[4];
    case 4: $parts['host'] =  $match[3];
    case 3: $parts['userinfo'] =  $match[2];
    case 2: $parts['scheme'] =  $match[1];
  }
  $parts['authority'] = ($parts['userinfo']?$parts['userinfo']."@":"").
                         $parts['host'].
                        ($parts['port']?":".$parts['port']:"");
  return $parts;
}

This function, when fed "http://ca3.php.net/manual/en/function.parse-url.php", returns
  scheme => http
  userinfo =>
  authority => ca3.php.net
  host => ca3.php.net
  port =>
  path => /manual/en/function.parse-url.php
  query =>
  fragment => 
which is somewhat closer to my needs.

But everything should be tested against the two examples provided by RFC3986,

  /* line too long for this site's commnet handler */
  "foo://username:[email protected]:8042".
      "/over/there/index.dtb;type=animal?name=ferret#nose"
and
  "urn:example:animal:ferret:nose"

Here the native function parse_url() performs admirably on that "urn:" example. Mine fails to pick out the path ("example:animal:ferret:nose") and the laulibrius/theoriginalmarksimpson function can't decipher anything there. On the "foo:" example, both my function and parse_url() get it right, while the other examples on this page don't.

The laulibrius/theoriginalmarksimpson function delivers
  scheme => foo
  login => username
  pass => password
  host => example.com
  ip =>
  subdomain =>
  domain => example.
  extension => com
  port => 8042
  path => /over/there/index.dtb
  file => index.dtb

As you can see, the query string ("name=ferret") and fragment ("nose") have dropped off, as well as the parameter ("type=animal").
----
Server IP: 216.235.15.211
Probable Submitter: 24.83.221.115
----
Manual Page -- http://www.php.net/manual/en/function.parse-url.php
Edit        -- https://master.php.net/note/edit/86115
Del: integrated  -- https://master.php.net/note/delete/86115/integrated
Del: useless     -- https://master.php.net/note/delete/86115/useless
Del: bad code    -- https://master.php.net/note/delete/86115/bad+code
Del: spam        -- https://master.php.net/note/delete/86115/spam
Del: non-english -- https://master.php.net/note/delete/86115/non-english
Del: in docs     -- https://master.php.net/note/delete/86115/in+docs
Del: other reasons-- https://master.php.net/note/delete/86115
Reject      -- https://master.php.net/note/reject/86115
Search      -- https://master.php.net/manage/user-notes.php