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<?php $expr = '! ^ (?: (?P<scheme> [a-z][a-z0-9.]* ) : )? (?: // (?<authority> (?: (?P<user> [^:@]+ ) (?: : (?P<pass> [^@]+ ) )? @ )? (?P<host> [^:/]+ ) (?: : (?P<port> [0-9]+ ) )? ) )? (?: / (?P<path> /[^?#]+? ) )? (?: \? (?P<query> [^#]+? ) )? (?: # (?P<fragment> .+ ) )? $ !ix'; $urls = [ 'http://host.com/path', 'http://user@host.com/path', 'http://user:pass@host.com/path', 'http://user:pass@host.com:8080/path', '//user:pass@host.com:8080/path', 'http://user:pass@host.com:8080/path?query#fragment', ]; foreach ($urls as $str) { echo "$str\n"; preg_match($expr, $str, $matches); foreach ($matches as $key => $match) { if (!is_int($key) && $match !== '') { echo " $key: $match\n"; } } echo "\n"; }

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