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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 293471 $ -->
<book xml:id="book.intl" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<title>Internationalization Functions</title>
<titleabbrev>intl</titleabbrev>
<!-- {{{ Preface -->
<preface xml:id="intro.intl">
&reftitle.intro;
<para>
Internationalization extension (further is referred as Intl) is a wrapper
for <link xlink:href="&url.icu.home;">ICU</link>
library, enabling PHP programmers to perform UCA-conformant collation and
date/time/number/currency formatting in their scripts.
</para>
<para>
It tends to closely follow ICU APIs, so that people having experience
working with ICU in either C/C++ or Java could easily use the PHP API.
Also, this way ICU documentation would be useful to understand various ICU
functions.
</para>
<para>
Intl consists of several modules, each of them exposes the corresponding
ICU API:
</para>
<itemizedlist>
<listitem>
<simpara>
Collator: provides string comparison capability with support for
appropriate locale-sensitive sort orderings.
</simpara>
</listitem>
<listitem>
<simpara>
Number Formatter: allows to display number according to the localized
format or given pattern or set of rules, and to parse strings into
numbers.
</simpara>
</listitem>
<listitem>
<simpara>
Message Formatter: allows to create messages incorporating data (such
as numbers or dates) formatted according to given pattern and locale
rules, and parse messages extracting data from them.
</simpara>
</listitem>
<listitem>
<simpara>
Normalizer: provides a function to transform text into one of the Unicode
normalization forms, and provides a routine to test if a given string is
already normalized.
</simpara>
</listitem>
<listitem>
<simpara>
Locale: provides interaction with locale identifiers in the form of
functions to get subtags from locale identifier; parse, compose,
match(lookup and filter) locale identifiers.
</simpara>
</listitem>
</itemizedlist>
<!-- {{{ Links -->
<section xml:id="intl.links">
<title>Links</title>
<itemizedlist>
<listitem>
<para><link xlink:href="&url.icu.docs;">Miscellaneous ICU docs</link></para>
</listitem>
<listitem>
<para><link xlink:href="&url.icu.userguide;">ICU User Guide</link></para>
</listitem>
<listitem>
<para><link xlink:href="&url.icu.uca;">Unicode Collation Algorithm</link></para>
</listitem>
</itemizedlist>
</section>
<!-- }}} -->
</preface>
<!-- }}} -->
&reference.intl.setup;
&reference.intl.constants;
&reference.intl.examples;
&reference.intl.collator;
&reference.intl.numberformatter;
&reference.intl.locale;
&reference.intl.normalizer;
&reference.intl.messageformatter;
&reference.intl.dateformatter;
&reference.intl.resourcebundle;
&reference.intl.grapheme;
&reference.intl.idn;
&reference.intl.reference;
</book>
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