From:             
Operating system: Mac OS X 10.6.6
PHP version:      5.3.5
Package:          URL related
Bug Type:         Bug
Bug description:parse_url failing for certain partial URLs

Description:
------------
The parse_url function fails to parse any partial URL with a colon followed
by a 

slash ":/" in it. It should have no problems parsing them though, since
it's 

easy to determine whether a URL is partial or not (any string that does not


start with a scheme [ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )] and then
an 

authority [which in the case of URLs starts with two slashes "//"] cannot
be a 

URL; see RFC 3986).



In the case of partial URLs, it would be expected that parse_url acts as if


"http://tld"; was prepended to the input string (without returning the
"scheme" 

or "host" parts, obviously).



The reason I'm filing this as a bug is because a script which uses a
trusted 

source of a partial URL (such as $_SERVER['REQUEST_URI'] in most
environments) 

and relies on parse_url will fail as soon as the visitor adds ":/"
somewhere in 

the path.



My current workaround is to check whether the URL is partial ($url{0} ==
'/' is 

sufficient in most cases) and if so, prepend a scheme and authority to it
before 

passing it to parse_url.

Test script:
---------------
$ php -r 'var_dump(parse_url("/?x=:/"));' # Fails

$ php -r 'var_dump(parse_url("/?x=:)"));' # Works

Expected result:
----------------
$ php -r 'var_dump(parse_url("/?x=:/"));'

array(2) {

  ["path"]=>

  string(1) "/"

  ["query"]=>

  string(4) "x=:/"

}

$ php -r 'var_dump(parse_url("/?x=:)"));'

array(2) {

  ["path"]=>

  string(1) "/"

  ["query"]=>

  string(4) "x=:)"

}

Actual result:
--------------
$ php -r 'var_dump(parse_url("/?x=:/"));'

bool(false)

$ php -r 'var_dump(parse_url("/?x=:)"));'

array(2) {

  ["path"]=>

  string(1) "/"

  ["query"]=>

  string(4) "x=:)"

}

-- 
Edit bug report at http://bugs.php.net/bug.php?id=54031&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=54031&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=54031&r=trysnapshot53
Try a snapshot (trunk):              
http://bugs.php.net/fix.php?id=54031&r=trysnapshottrunk
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=54031&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=54031&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=54031&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=54031&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=54031&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=54031&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=54031&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=54031&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=54031&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=54031&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=54031&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=54031&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=54031&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=54031&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=54031&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=54031&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=54031&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=54031&r=mysqlcfg

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