NAME

       URL::Encode - Encoding and decoding of "application/x-www-form-urlencoded" encoding.

SYNOPSIS

           $octets = url_decode($octets);
           $string = url_decode_utf8($octets);

           $octets = url_encode($octets);
           $octets = url_encode_utf8($string);

           $params = url_params_flat($octets [, $utf8 = false]);
           $params = url_params_mixed($octets [, $utf8 = false]);
           $params = url_params_multi($octets [, $utf8 = false]);
                     url_params_each($octets, $callback [, $utf8 = false]);

DESCRIPTION

       This module provides functions to encode and decode strings into and from the
       "application/x-www-form-urlencoded" encoding.

       The "application/x-www-form-urlencoded" format encodes a ordered data sets of pairs consisting of a name
       and a value, with pairs separated by ampersand or semicolon and names and values separated by the equal
       sign.  Space characters are replaced with plus sign and any characters not in the unreserved character
       set is encoded using the percent-encoding scheme also used for resource identifiers. A percent-encoded
       octet is encoded as a character triplet, consisting of the percent character "%" followed by the two
       hexadecimal digits representing that octet's numeric value.

       The unreserved character set includes the uppercase and lowercase letters, decimal digits, hyphen,
       period, underscore, and tilde.

           ABCDEFGHIJKLMNOPQRSTUVWXYZ
           abcdefghijklmnopqrstuvwxyz
           0123456789
           - . _ ~

FUNCTIONS

   url_decode
           $octets = url_decode($octets);

       Returns a decoded representation of the given URL-encoded $octets as an octet string.

   url_decode_utf8
           $string = url_decode_utf8($octets);

       Returns a decoded representation of the given URL-encoded $octets in UTF-8 encoding as a character
       string.

   url_encode
           $octets = url_encode($octets);

       Returns a URL-encoded representation of the given $octets as an octet string.

   url_encode_utf8
           $octets = url_encode_utf8($string);

       Returns a URL-encoded representation of $string in UTF-8 encoding as an octet string.

   url_params_flat
           $params = url_params_flat($octets);
           $params = url_params_flat($octets, $utf8);

       Parses a URL-encoded data set of name/value pairs from the given octets.  Returns an ARRAY reference
       containing the URL-decoded name/value pairs in order.

           $params = url_params_flat('foo=A&foo=B&bar=C');
           $params; # [ foo => 'A', foo => 'B', bar => 'C' ]

   url_params_mixed
           $params = url_params_mixed($octets);
           $params = url_params_mixed($octets, $utf8);

       Parses a URL-encoded data set of name/value pairs from the given octets.  Returns a HASH reference
       containing the URL-decoded name/value pairs. Multiple occurrences of a parameter will result in an ARRAY
       reference holding all the values for that parameter in order.

           $params = url_params_mixed('foo=A&foo=B&bar=C');
           $params; # { foo => [ 'A', 'B' ], bar => 'C' }

   url_params_multi
           $params = url_params_multi($octets);
           $params = url_params_multi($octets, $utf8);

       Parses a URL-encoded data set of name/value pairs from the given octets.  Returns a HASH reference
       containing the URL-decoded name/value pairs. Values are stored in an ARRAY reference.

           $params = url_params_multi('foo=A&foo=B&bar=C');
           $params; # { foo => [ 'A', 'B' ], bar => [ 'C' ] }

   url_params_each
           url_params_each($octets, $callback);
           url_params_each($octets, $callback, $utf8);

       Parses a URL-encoded data set of name/value pairs from the given octets.  Invokes the given callback for
       each URL-decoded name/value pair.

           $callback = sub {
               my ($name, $value) = @_;
           };

           url_params_each($octets, $callback);

EXPORTS

       None by default. All functions can be exported using the ":all" tag or individually.

DIAGNOSTICS

       (F) Usage: %s
           Subroutine called with wrong number of arguments.

       (F) Wide character in octet string
       (F) Malformed UTF-8 in URL-decoded octets

PERFORMANCE

       The URL::Encode::XS module provides faster C/XS implementations of the functions found in this module.
       This module will automatically use URL::Encode::XS if it's installed.

           Benchmarking url_decode() PP vs XS:

                   Rate    PP    XS
           PP  507520/s    --  -92%
           XS 6389812/s 1159%    --

           Benchmarking url_encode() PP vs XS:

                   Rate    PP    XS
           PP  119866/s    --  -98%
           XS 7214089/s 5918%    --

           Benchmarking url_params_mixed() PP vs XS:

                 Rate    PP    XS
           PP  4450/s    --  -95%
           XS 95015/s 2035%    --

           Benchmarking URL::Encode::XS vs CGI::Deurl::XS

                              Rate  CGI::Deurl::XS URL::Encode::XS
           CGI::Deurl::XS  51932/s              --            -48%
           URL::Encode::XS 99444/s             91%              --

SEE ALSO

       URL::Encode::XS
           XS implementation of "URL::Encode".

       CGI::Deurl::XS

SUPPORT

   BUGS
       Please report any bugs by email to "bug-url-encode at rt.cpan.org", or through the web interface at
       <http://rt.cpan.org/Public/Dist/Display.html?Name=URL-Encode>.  You will be automatically notified of any
       progress on the request by the system.

   SOURCE CODE
       This is open source software. The code repository is available for public review and contribution under
       the terms of the license.

       <http://github.com/chansen/p5-url-encode>

           git clone http://github.com/chansen/p5-url-encode

AUTHOR

       Christian Hansen "chansen@cpan.org"

COPYRIGHT

       Copyright 2011-2014 by Christian Hansen.

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl
       itself.