array-reverse.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
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<refentry xml:id="function.array-reverse" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>array_reverse</refname>
  <refpurpose>Devuelve un array con los elementos en orden inverso</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>array</type><methodname>array_reverse</methodname>
   <methodparam><type>array</type><parameter>array</parameter></methodparam>
   <methodparam choice="opt"><type>bool</type><parameter>preserve_keys</parameter><initializer>&false;</initializer></methodparam>
  </methodsynopsis>
  <para>
   Toma un valor <parameter>array</parameter> y devuelve un nuevo array con
   el orden de los elementos invertido.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>array</parameter></term>
     <listitem>
      <para>
       El array de entrada.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>preserve_keys</parameter></term>
     <listitem>
      <para>
       Si se establece en &true; las claves numéricas se conservarán. 
       Las claves no numéricas no se ven afectadas por este ajuste y se conservarán siempre.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Devuelve el array en orden inverso.
  </para>
 </refsect1>
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Ejemplo de <function>array_reverse</function></title>
    <programlisting role="php">
<![CDATA[
<?php
$input  = array("php", 4.0, array("verde", "rojo"));
$reversed = array_reverse($input);
$preserved = array_reverse($input, true);

print_r($input);
print_r($reversed);
print_r($preserved);
?>
]]>
    </programlisting>
    &example.outputs;
    <screen role="php">
<![CDATA[
Array
(
    [0] => php
    [1] => 4
    [2] => Array
        (
            [0] => verde
            [1] => rojo
        )

)
Array
(
    [0] => Array
        (
            [0] => verde
            [1] => rojo
        )

    [1] => 4
    [2] => php
)
Array
(
    [2] => Array
        (
            [0] => verde
            [1] => rojo
        )

    [1] => 4
    [0] => php
)
]]>
    </screen>
   </example>
  </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>array_flip</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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