reference/intl/intlchar/isxdigit.xml
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e20e74073379710a4f6316734c42996c8fbf9beb
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<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="intlchar.isxdigit" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>IntlChar::isxdigit</refname>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<modifier>public</modifier> <modifier>static</modifier> <type>bool</type><methodname>IntlChar::isxdigit</methodname>
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<methodparam><type>mixed</type><parameter>codepoint</parameter></methodparam>
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<methodsynopsis role="IntlChar">
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<modifier>public</modifier> <modifier>static</modifier> <type class="union"><type>bool</type><type>null</type></type><methodname>IntlChar::isxdigit</methodname>
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<methodparam><type class="union"><type>int</type><type>string</type></type><parameter>codepoint</parameter></methodparam>
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</methodsynopsis>
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<para>
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Determines whether the specified code point is a hexadecimal digit.
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(That is, for letters with code points 0041..0046, 0061..0066, FF21..FF26, FF41..FF46.)
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</para>
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<para>
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This is equivalent to <literal>IntlChar::digit($codepoint, 16) >= 0</literal>.
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This is equivalent to <literal>IntlChar::digit($codepoint, 16) >= 0</literal>.
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</para>
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</refsect1>
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&reftitle.returnvalues;
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<para>
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Returns &true; if
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<parameter>codepoint</parameter> is a hexadecimal character, &false; if not.
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<parameter>codepoint</parameter> is a hexadecimal character, &false; if not. Returns &null; on failure.
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<para>
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In order to narrow the definition of hexadecimal digits to only ASCII characters use:
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$isASCIIHexadecimal = IntlChar::ord($codepoint) <= 0x7F && IntlChar::isxdigit($codepoint);
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?>
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]]>
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</programlisting>
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</note>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<example>
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</example>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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<note>
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<para>
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In order to narrow the definition of hexadecimal digits to only ASCII characters use:
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$isASCIIHexadecimal = IntlChar::ord($codepoint) <= 0x7F && IntlChar::isxdigit($codepoint);
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?>
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]]>
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</programlisting>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>IntlChar::isdigit</function></member>
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<member><function>ctype_xdigit</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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