add hash_copy() description

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@258099 c90b9560-bf6c-de11-be94-00142212c4b1

reference/hash/functions/hash-copy.xml

@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- $Revision: 1.1 $ -->
+<refentry xml:id="function.hash-copy" xmlns="http://docbook.org/ns/docbook">
+ <refnamediv>
+  <refname>hash_copy</refname>
+  <refpurpose>Copy hashing context</refpurpose>
+ </refnamediv>
+ <refsect1 role="description">
+  &reftitle.description;
+  <methodsynopsis>
+   <type>resource</type><methodname>hash_copy</methodname>
+   <methodparam><type>resource</type><parameter>context</parameter></methodparam>
+  </methodsynopsis>
+ </refsect1>
+
+ <refsect1 role="parameters">
+  &reftitle.parameters;
+  <para>
+   <variablelist>
+    <varlistentry>
+     <term><parameter>context</parameter></term>
+     <listitem>
+      <para>
+       Hashing context returned by <function>hash_init</function>.
+      </para>
+     </listitem>
+    </varlistentry>
+   </variablelist>
+  </para>
+ </refsect1>
+
+ <refsect1 role="returnvalues">
+  &reftitle.returnvalues;
+  <para>
+   Returns a copy of Hashing Context resource.
+  </para>
+ </refsect1>
+
+ <refsect1 role="examples">
+  &reftitle.examples;
+  <para>
+   <example>
+    <title><function>hash_copy</function> example</title>
+    <programlisting role="php">
+<![CDATA[
+<?php
+$context = hash_init("md5");
+hash_update($context, "data");
+
+/* copy context to be able to continue using it */
+$copy_context = hash_copy($context);
+
+echo hash_final($context), "\n";
+
+hash_update($copy_context, "data");
+echo hash_final($copy_context), "\n";
+?>
+]]>
+    </programlisting>
+    &example.outputs;
+    <screen>
+<![CDATA[
+8d777f385d3dfec8815d20f7496026dc
+511ae0b1c13f95e5f08f1a0dd3da3d93
+]]>
+    </screen>
+   </example>
+  </para>
+ </refsect1>
+
+</refentry>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"../../../../manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->