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is-object.xml
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135 lines (129 loc) · 3.21 KB
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: ccc438a27bae31d71fe2ca7dc095360db5bc1af6 Maintainer: PhilDaiguille Status: ready -->
<!-- Reviewed: yes -->
<refentry xml:id="function.is-object" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>is_object</refname>
<refpurpose>Determina si una variable es de tipo objeto</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>is_object</methodname>
<methodparam><type>mixed</type><parameter>value</parameter></methodparam>
</methodsynopsis>
<para>
Determina si la variable dada es de tipo objeto.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>value</parameter></term>
<listitem>
<para>
La variable a evaluar.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Retorna &true; si <parameter>value</parameter> es un <type>object</type>,
&false; en caso contrario.
</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>
<function>is_object</function> retorna ahora &true; para un objeto
deserializado sin una definición de clase
(clase de <classname>__PHP_Incomplete_Class</classname>).
Anteriormente se retornaba &false;.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Ejemplo con <function>is_object</function></title>
<programlisting role="php">
<![CDATA[
<?php
// Declara una función simple para retornar un array
// de nuestro objeto
function get_students($obj)
{
if (!is_object($obj)) {
return false;
}
return $obj->students;
}
// Declara una nueva instancia y
// la rellena
$obj = new stdClass();
$obj->students = array('Kalle', 'Ross', 'Felipe');
var_dump(get_students(null));
var_dump(get_students($obj));;
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>is_bool</function></member>
<member><function>is_int</function></member>
<member><function>is_float</function></member>
<member><function>is_string</function></member>
<member><function>is_array</function></member>
</simplelist>
</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:"~/.phpdoc/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
-->