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<title>La clase SplFixedArray</title>

<titleabbrev>SplFixedArray</titleabbrev>

<partintro>

<!-- {{{ splfixedarray intro -->

<section xml:id="splfixedarray.intro">

&reftitle.intro;

<para>

la clase SplFixedArray proporciona la funcionalidad principal de un array. La

principal diferencia entre SplFixedArray y un array normal de PHP es que

la clase SplFixedArray es de longitud fija y sólo permite enteros dentro del

rango de índices. La ventaja es que usa menos memoría que un

<type>array</type> estándar.

</para>

</section>

<!-- }}} -->

<section xml:id="splfixedarray.synopsis">

&reftitle.classsynopsis;

<!-- {{{ Synopsis -->

<classsynopsis class="class">

<ooclass>

<classname>SplFixedArray</classname>

</ooclass>

<oointerface>

<modifier>implements</modifier>

<interfacename>IteratorAggregate</interfacename>

</oointerface>

<oointerface>

<interfacename>ArrayAccess</interfacename>

</oointerface>

<oointerface>

<interfacename>Countable</interfacename>

</oointerface>

<oointerface>

<interfacename>JsonSerializable</interfacename>

</oointerface>

<classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>

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<xi:fallback/>

</xi:include>

</classsynopsis>

</section>

<section role="changelog">

&reftitle.changelog;

<informaltable>

<tgroup cols="2">

<thead>

<row>

<entry>&Version;</entry>

<entry>&Description;</entry>

</row>

</thead>

<tbody>

<row>

<entry>8.2.0</entry>

<entry>

Se han añadido los métodos mágicos <methodname>SplFixedArray::__serialize</methodname> y

<methodname>SplFixedArray::__unserialize</methodname>

a <classname>SplFixedArray</classname>.

</entry>

</row>

<row>

<entry>8.1.0</entry>

<entry>

<classname>SplFixedArray</classname> ahora implementa

<interfacename>JsonSerializable</interfacename>.

</entry>

</row>

<row>

<entry>8.0.0</entry>

<entry>

<classname>SplFixedArray</classname> ahora implementa

<interfacename>IteratorAggregate</interfacename>.

Anteriormente, se implementaba <interfacename>Iterator</interfacename> en su lugar.

</entry>

</row>

</tbody>

</tgroup>

</informaltable>

</section>

<!-- {{{ splfixedarray examples -->

<section xml:id="splfixedarray.examples">

&reftitle.examples;

<para>

<example>

<title>Ejemplo de uso <classname>SplFixedArray</classname></title>

<programlisting role="php">

<![CDATA[

<?php

// Inicializar el array con una longitud fija

$array = new SplFixedArray(5);

$array[1] = 2;

$array[4] = "foo";

var_dump($array[0]); // NULL

var_dump($array[1]); // int(2)

var_dump($array["4"]); // string(3) "foo"

// Aumentar el tamaño del array a 10

$array->setSize(10);

$array[9] = "asdf";

// Reducir el tamaño de un array a 2

$array->setSize(2);

// Las siguientes líneas lanzan una RuntimeException: Index invalid or out of range (Índice inválido o fuera de rango)

try {

var_dump($array["non-numeric"]);

} catch(RuntimeException $re) {

echo "RuntimeException: ".$re->getMessage()."\n";

}

try {

var_dump($array[-1]);

} catch(RuntimeException $re) {

echo "RuntimeException: ".$re->getMessage()."\n";

}

try {

var_dump($array[5]);

} catch(RuntimeException $re) {

echo "RuntimeException: ".$re->getMessage()."\n";

}

?>

]]>

</programlisting>

&example.outputs;

<screen>

<![CDATA[

NULL

int(2)

string(3) "foo"

RuntimeException: Index invalid or out of range

RuntimeException: Index invalid or out of range

RuntimeException: Index invalid or out of range

]]>

</screen>

</example>

</para>

</section>

<!-- }}} -->

<!-- {{{ splfixedarray properties

<section xml:id="splfixedarray.props">

&reftitle.properties;

<variablelist>

<varlistentry xml:id="splfixedarray.props.name">

<term><varname>name</varname></term>

<listitem>

<para>Prop description</para>

</listitem>

</varlistentry>

</variablelist>

</section>

}}} -->

</partintro>

&reference.spl.entities.splfixedarray;

</reference>

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