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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="intlchar.isidpart" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>IntlChar::isIDPart</refname>
<refpurpose>Check if code point is permissible in an identifier</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="IntlChar">
<modifier>public</modifier> <modifier>static</modifier> <type class="union"><type>bool</type><type>null</type></type><methodname>IntlChar::isIDPart</methodname>
<methodparam><type class="union"><type>int</type><type>string</type></type><parameter>codepoint</parameter></methodparam>
</methodsynopsis>
<para>
Determines if the specified character is permissible in an identifier.
</para>
<para>
&true; for characters with general categories "L" (letters), "Nl" (letter numbers), "Nd" (decimal digits),
"Mc" and "Mn" (combining marks), "Pc" (connecting punctuation), and u_isIDIgnorable(c).
</para>
<note>
<para>
This is almost the same as Unicode's ID_Continue (<constant>IntlChar::PROPERTY_ID_CONTINUE</constant>) except that
Unicode recommends to ignore Cf which is less than <function>IntlChar::isIDIgnorable</function>.
</para>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>codepoint</parameter></term>
<listitem>
&intl.codepoint.parameter;
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns &true; if
<parameter>codepoint</parameter> is the code point may occur in an identifier, &false; if not. Returns &null; on failure.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example>
<title>&intl.codepoint.example;</title>
<programlisting role="php">
<![CDATA[
<?php
var_dump(IntlChar::isIDPart("A"));
var_dump(IntlChar::isIDPart("$"));
var_dump(IntlChar::isIDPart("\n"));
var_dump(IntlChar::isIDPart("\u{2603}"));
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
bool(true)
bool(false)
bool(false)
bool(false)
]]>
</screen>
</example>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>IntlChar::isIDIgnorable</function></member>
<member><function>IntlChar::isIDStart</function></member>
<member><constant>IntlChar::PROPERTY_ID_CONTINUE</constant></member>
</simplelist>
</para>
</refsect1>
</refentry>
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