/
enumcharnames.xml
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/
enumcharnames.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="intlchar.enumcharnames" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>IntlChar::enumCharNames</refname>
<refpurpose>Enumerate all assigned Unicode characters within a range</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="IntlChar">
<modifier>public</modifier> <modifier>static</modifier> <type>bool</type><methodname>IntlChar::enumCharNames</methodname>
<methodparam><type class="union"><type>int</type><type>string</type></type><parameter>start</parameter></methodparam>
<methodparam><type class="union"><type>int</type><type>string</type></type><parameter>end</parameter></methodparam>
<methodparam><type>callable</type><parameter>callback</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>type</parameter><initializer>IntlChar::UNICODE_CHAR_NAME</initializer></methodparam>
</methodsynopsis>
<para>
Enumerate all assigned Unicode characters between the start and limit code points (start inclusive, limit exclusive)
and call a function for each, passing the code point value and the character name.
</para>
<para>
For Unicode 1.0 names, only those are enumerated that differ from the modern names.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>start</parameter></term>
<listitem>
<para>
The first code point in the enumeration range.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>end</parameter></term>
<listitem>
<para>
One more than the last code point in the enumeration range (the first one after the range).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>callback</parameter></term>
<listitem>
<para>
The function that is to be called for each character name. The following three arguments will be passed into it:
<simplelist>
<member><type>int</type> <literal>$codepoint</literal> - The numeric code point value</member>
<member><type>int</type> <literal>$nameChoice</literal> - The same value as the <parameter>type</parameter> parameter below</member>
<member><type>string</type> <literal>$name</literal> - The name of the character</member>
</simplelist>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>type</parameter></term>
<listitem>
<para>
Selector for which kind of names to enumerate. Can be any of these constants:
<simplelist>
<member><constant>IntlChar::UNICODE_CHAR_NAME</constant> (default)</member>
<member><constant>IntlChar::UNICODE_10_CHAR_NAME</constant></member>
<member><constant>IntlChar::EXTENDED_CHAR_NAME</constant></member>
<member><constant>IntlChar::CHAR_NAME_ALIAS</constant></member>
<member><constant>IntlChar::CHAR_NAME_CHOICE_COUNT</constant></member>
</simplelist>
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<para>
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.3.0</entry>
<entry>
This method now returns &false; on failure; previously it returns &null;.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title>Enumerating over a sample range of code points</title>
<programlisting role="php">
<![CDATA[
<?php
IntlChar::enumCharNames(0x2600, 0x2610, function($codepoint, $nameChoice, $name) {
printf("U+%04x %s\n", $codepoint, $name);
});
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
U+2600 BLACK SUN WITH RAYS
U+2601 CLOUD
U+2602 UMBRELLA
U+2603 SNOWMAN
U+2604 COMET
U+2605 BLACK STAR
U+2606 WHITE STAR
U+2607 LIGHTNING
U+2608 THUNDERSTORM
U+2609 SUN
U+260a ASCENDING NODE
U+260b DESCENDING NODE
U+260c CONJUNCTION
U+260d OPPOSITION
U+260e BLACK TELEPHONE
U+260f WHITE TELEPHONE
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>IntlChar::charName</function></member>
<member><function>IntlChar::charFromName</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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