[#boost-urls-url_base-encoded_params]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/url_base.adoc[url&lowbar;base]::encoded&lowbar;params
:relfileprefix: ../../../
:mrdocs:


Return the query as a container of parameters

== Synopsis


Declared in `&lt;https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_base.hpp#L2174[boost&sol;url&sol;url&lowbar;base&period;hpp]&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/params_encoded_view.adoc[params&lowbar;encoded&lowbar;view]
xref:boost/urls/url_base/encoded_params-02.adoc[encoded&lowbar;params]() const noexcept;
----

[.small]#xref:boost/urls/url_base/encoded_params-02.adoc[_» more..._]#

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:boost/urls/params_encoded_ref.adoc[params&lowbar;encoded&lowbar;ref]
xref:boost/urls/url_base/encoded_params-06.adoc[encoded&lowbar;params]() noexcept;
----

[.small]#xref:boost/urls/url_base/encoded_params-06.adoc[_» more..._]#

== Description


This function returns a bidirectional        view of key&sol;value pairs over the query&period;        The returned view references the same        underlying character buffer&semi; ownership        is not transferred&period;        Strings returned when iterating the        range may contain percent escapes&period;


=== Example

[,cpp]
----
params_encoded_view pv = url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).encoded_params();
----

=== Complexity

Constant&period;


=== Exception Safety

Throws nothing&period;


=== BNF

[,cpp]
----
query           = *( pchar / "/" / "?" )
query-param     = key [ "=" value ]
query-params    = [ query-param ] *( "&" query-param )
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.4[3&period;4&period; Query (rfc3986)]
        
* link:https://en.wikipedia.org/wiki/Query_string[Query string (Wikipedia)]

Return the query as a container of parameters

This function returns a bidirectional        view of key&sol;value pairs over the query&period;        The returned view references the same        underlying character buffer&semi; ownership        is not transferred&period;        Strings returned when iterating the        range may contain percent escapes&period;


=== Example

[,cpp]
----
params_encoded_view pv = url_view( "/sql?id=42&name=jane%2Ddoe&page+size=20" ).encoded_params();
----

=== Complexity

Constant&period;


=== Exception Safety

Throws nothing&period;


=== BNF

[,cpp]
----
query           = *( pchar / "/" / "?" )
query-param     = key [ "=" value ]
query-params    = [ query-param ] *( "&" query-param )
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.4[3&period;4&period; Query (rfc3986)]
        
* link:https://en.wikipedia.org/wiki/Query_string[Query string (Wikipedia)]



== See Also


xref:boost/urls/url_view_base/encoded_query.adoc[encoded&lowbar;query],            xref:boost/urls/url_view_base/has_query.adoc[has&lowbar;query],            xref:boost/urls/url_view_base/params-05.adoc[params],            xref:boost/urls/url_view_base/query.adoc[query]&period;



xref:boost/urls/url_view_base/encoded_query.adoc[encoded&lowbar;query],            xref:boost/urls/url_view_base/has_query.adoc[has&lowbar;query],            xref:boost/urls/url_view_base/params-05.adoc[params],            xref:boost/urls/url_view_base/query.adoc[query]&period;






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