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@ 2013-11-28T10:32:15Z

<?php

$pattern = <<<REGEXP
!
  ^
    (?P<scheme> [a-z][a-z0-9+.\-]* ) [:] # scheme is mandatory, and followed by a :

    (?: [/][/]                           # // indicates that this component is the authority
      (?:
        (?P<user> [^:@/]+ )
        (?: [:] (?P<pass> [^:@/]+ ) )?
        [@]
      )?                                 # auth details are optional

      (?P<host> [^:/]* )                 # host is mandatory. Technically it should be at least 1 char, but PHP has
                                         # internal schemes that violate this rule and as much as I dislike it, I
                                         # feel that we should pass this

      (?: [:] (?P<port> [0-9]+ ) )?      # port is simply a sequence of decimal digits

      (?= [/?#]|$ )                      # path must be missing or begin with / if authority is present
    )?

    (?P<path> [^?#]+ )?                  # path is everything up to the query/fragment

    (?: [?] (?P<query> [^#]+ ) )?          # query is optional

    (?: [#] (?P<fragment> .+ ) )?          # fragment is optional
  $
!xi
REGEXP;

$url = 'http://foo.com/test?thing=stuff#fragment';


preg_match($pattern, $url, $matches);
print_r($matches);

Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Array ( [0] => http://foo.com/test?thing=stuff#fragment [scheme] => http [1] => http [user] => [2] => [pass] => [3] => [host] => foo.com [4] => foo.com [port] => [5] => [path] => /test [6] => /test [query] => thing=stuff [7] => thing=stuff [fragment] => fragment [8] => fragment )
Output for 4.3.0 - 4.3.2: Array ( [0] => http://foo.com/test?thing=stuff#fragment [1] => http [2] => [3] => [4] => foo.com [5] => [6] => /test [7] => thing=stuff [8] => fragment )

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