doc-es/reference/hash/functions/hash-update-stream.xml at master · php/doc-es · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<!-- EN-Revision: a19139232af73a3c2054fcf5a687640ade63a393 Maintainer: PhilDaiguille Status: ready -->
<!-- Reviewed: no -->
<refentry xml:id="function.hash-update-stream" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>hash_update_stream</refname>
  <refpurpose>Introduce datos en un contexto de hash activo desde un flujo abierto</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>int</type><methodname>hash_update_stream</methodname>
   <methodparam><type>HashContext</type><parameter>context</parameter></methodparam>
   <methodparam><type>resource</type><parameter>stream</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>length</parameter><initializer>-1</initializer></methodparam>
  </methodsynopsis>

 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>context</parameter></term>
     <listitem>
      <para>
       Contexto de hash devuelto por <function>hash_init</function>.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>stream</parameter></term>
     <listitem>
      <para>
       Gestor de fichero abierto como el devuelto por cualquier función de creación de flujos.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>length</parameter></term>
     <listitem>
      <para>
       Número máximo de caracteres a copiar desde <parameter>stream</parameter>
       al contexto de hash.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Número real de bytes añadidos al contexto de hash desde <parameter>stream</parameter>.
  </para>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <para>
   <informaltable>
    <tgroup cols="2">
     <thead>
      <row>
       <entry>&Version;</entry>
       <entry>&Description;</entry>
      </row>
     </thead>
     <tbody>
      <row>
       <entry>7.2.0</entry>
       <entry>
        Acepta <classname>HashContext</classname> en lugar de resource.
       </entry>
      </row>
     </tbody>
    </tgroup>
   </informaltable>
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Ejemplo de <function>hash_update_stream</function></title>
    <programlisting role="php">
<![CDATA[
<?php
$fp = tmpfile();
fwrite($fp, 'jumped over the lazy dog.');
rewind($fp);

$ctx = hash_init('sha256');
hash_update($ctx, 'The quick brown fox ');
hash_update_stream($ctx, $fp);
echo hash_final($ctx);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>hash_init</function></member>
    <member><function>hash_update</function></member>
    <member><function>hash_final</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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