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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 328365 $ -->
<refentry xml:id="function.urldecode" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>urldecode</refname>
<refpurpose>Decodes URL-encoded string</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>urldecode</methodname>
<methodparam><type>string</type><parameter>str</parameter></methodparam>
</methodsynopsis>
<para>
Decodes any <literal>%<replaceable>##</replaceable></literal>
encoding in the given string. Plus symbols ('<literal>+</literal>') are
decoded to a space character.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>str</parameter></term>
<listitem>
<para>
The string to be decoded.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the decoded string.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>urldecode</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
$query = "my=apples&are=green+and+red";
foreach (explode('&', $query) as $chunk) {
$param = explode("=", $chunk);
if ($param) {
printf("Value for parameter \"%s\" is \"%s\"<br/>\n", urldecode($param[0]), urldecode($param[1]));
}
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<warning>
<para>
The superglobals <varname>$_GET</varname> and <varname>$_REQUEST</varname>
are already decoded. Using <function>urldecode</function> on an element
in <varname>$_GET</varname> or <varname>$_REQUEST</varname> could have
unexpected and dangerous results.
</para>
</warning>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>urlencode</function></member>
<member><function>rawurlencode</function></member>
<member><function>rawurldecode</function></member>
<member><link xlink:href="&url.rfc;3986">RFC 3986</link></member>
</simplelist>
</para>
</refsect1>
</refentry>
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