islower.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="intlchar.islower" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>IntlChar::islower</refname>
  <refpurpose>Check if code point is a lowercase letter</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::islower</methodname>
   <methodparam><type class="union"><type>int</type><type>string</type></type><parameter>codepoint</parameter></methodparam>
  </methodsynopsis>
  <para>
   Determines whether the specified code point has the general category "Ll" (lowercase letter).
  </para>
  <note>
   <para>
    This misses some characters that are also lowercase but have a different general category value. In order to include those, use <function>IntlChar::isULowercase</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 an Ll lowercase letter, &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::islower("A"));
var_dump(IntlChar::islower("a"));
var_dump(IntlChar::islower("Φ"));
var_dump(IntlChar::islower("φ"));
var_dump(IntlChar::islower("1"));
?>
]]>
   </programlisting>
   &example.outputs;
   <screen>
    <![CDATA[
bool(false)
bool(true)
bool(false)
bool(true)
bool(false)
]]>
   </screen>
  </example>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>IntlChar::isupper</function></member>
    <member><function>IntlChar::istitle</function></member>
    <member><function>IntlChar::tolower</function></member>
    <member><function>IntlChar::toupper</function></member>
    <member><constant>IntlChar::PROPERTY_LOWERCASE</constant></member>
    <member><function>ctype_lower</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>
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