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<refentry xml:id="function.mb-strwidth" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">

<refnamediv>

<refname>mb_strwidth</refname>

<refpurpose>Devuelve el tamaño de una cadena</refpurpose>

</refnamediv>

<refsect1 role="description">

&reftitle.description;

<methodsynopsis>

<type>int</type><methodname>mb_strwidth</methodname>

<methodparam><type>string</type><parameter>string</parameter></methodparam>

<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>encoding</parameter><initializer>&null;</initializer></methodparam>

</methodsynopsis>

<para>

Devuelve la anchura de <type>string</type> <parameter>string</parameter>,

donde los caracteres de media anchura cuentan como <literal>1</literal>, y

los caracteres de doble anchura cuentan como <literal>2</literal>.

Ver <link xlink:href="&url.unicode.reports.tr;11/">&url.unicode.reports.tr;11/</link>

para más detalles sobre la anchura de caracteres asiáticos del este.

</para>

<para>

Los caracteres de doble anchura son:

<literal>U+1100</literal>-<literal>U+115F</literal>,

<literal>U+11A3</literal>-<literal>U+11A7</literal>,

<literal>U+11FA</literal>-<literal>U+11FF</literal>,

<literal>U+2329</literal>-<literal>U+232A</literal>,

<literal>U+2E80</literal>-<literal>U+2E99</literal>,

<literal>U+2E9B</literal>-<literal>U+2EF3</literal>,

<literal>U+2F00</literal>-<literal>U+2FD5</literal>,

<literal>U+2FF0</literal>-<literal>U+2FFB</literal>,

<literal>U+3000</literal>-<literal>U+303E</literal>,

<literal>U+3041</literal>-<literal>U+3096</literal>,

<literal>U+3099</literal>-<literal>U+30FF</literal>,

<literal>U+3105</literal>-<literal>U+312D</literal>,

<literal>U+3131</literal>-<literal>U+318E</literal>,

<literal>U+3190</literal>-<literal>U+31BA</literal>,

<literal>U+31C0</literal>-<literal>U+31E3</literal>,

<literal>U+31F0</literal>-<literal>U+321E</literal>,

<literal>U+3220</literal>-<literal>U+3247</literal>,

<literal>U+3250</literal>-<literal>U+32FE</literal>,

<literal>U+3300</literal>-<literal>U+4DBF</literal>,

<literal>U+4E00</literal>-<literal>U+A48C</literal>,

<literal>U+A490</literal>-<literal>U+A4C6</literal>,

<literal>U+A960</literal>-<literal>U+A97C</literal>,

<literal>U+AC00</literal>-<literal>U+D7A3</literal>,

<literal>U+D7B0</literal>-<literal>U+D7C6</literal>,

<literal>U+D7CB</literal>-<literal>U+D7FB</literal>,

<literal>U+F900</literal>-<literal>U+FAFF</literal>,

<literal>U+FE10</literal>-<literal>U+FE19</literal>,

<literal>U+FE30</literal>-<literal>U+FE52</literal>,

<literal>U+FE54</literal>-<literal>U+FE66</literal>,

<literal>U+FE68</literal>-<literal>U+FE6B</literal>,

<literal>U+FF01</literal>-<literal>U+FF60</literal>,

<literal>U+FFE0</literal>-<literal>U+FFE6</literal>,

<literal>U+1B000</literal>-<literal>U+1B001</literal>,

<literal>U+1F200</literal>-<literal>U+1F202</literal>,

<literal>U+1F210</literal>-<literal>U+1F23A</literal>,

<literal>U+1F240</literal>-<literal>U+1F248</literal>,

<literal>U+1F250</literal>-<literal>U+1F251</literal>,

<literal>U+20000</literal>-<literal>U+2FFFD</literal>,

<literal>U+30000</literal>-<literal>U+3FFFD</literal>.

Todos los demás caracteres son caracteres de media anchura.

</para>

</refsect1>

<refsect1 role="parameters">

&reftitle.parameters;

<para>

<variablelist>

<varlistentry>

<term><parameter>string</parameter></term>

<listitem>

<para>

La cadena a analizar.

</para>

</listitem>

</varlistentry>

<varlistentry>

<term><parameter>encoding</parameter></term>

<listitem>

&mbstring.encoding.parameter;

</listitem>

</varlistentry>

</variablelist>

</para>

</refsect1>

<refsect1 role="returnvalues">

&reftitle.returnvalues;

<para>

El tamaño de la <type>string</type> <parameter>string</parameter>.

</para>

</refsect1>

<refsect1 role="changelog">

&reftitle.changelog;

<informaltable>

<tgroup cols="2">

<thead>

<row>

<entry>&Version;</entry>

<entry>&Description;</entry>

</row>

</thead>

<tbody>

&mbstring.changelog.encoding-nullable;

</tbody>

</tgroup>

</informaltable>

</refsect1>

<refsect1 role="examples">

&reftitle.examples;

<example xml:id="mb-strwidth.example.basic">

<title>Ejemplo <function>mb_strwidth</function></title>

<programlisting role="php">

<![CDATA[

<?php

var_dump(

mb_strwidth('a'), // LATIN SMALL LETTER A

mb_strwidth("\u{ff41}") // FULLWIDTH LATIN SMALL LETTER A

);

?>

]]>

</programlisting>

&example.outputs;

<screen>

<![CDATA[

int(1)

int(2)

]]>

</screen>

</example>

</refsect1>

<refsect1 role="seealso">

&reftitle.seealso;

<para>

<simplelist>

<member><function>mb_strimwidth</function></member>

<member><function>mb_internal_encoding</function></member>

</simplelist>

</para>

</refsect1>

</refentry>

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