<?xml version="1.0" encoding="iso-8859-1"?>
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<refentry xml:id="function.is-unicode" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>is_unicode</refname>
  <refpurpose>Finds whether a variable is a unicode string</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>is_unicode</methodname>
   <methodparam><type>mixed</type><parameter>var</parameter></methodparam>
  </methodsynopsis>
  <para>
   Finds whether the given variable is a <type>unicode</type> string.
  </para>
 </refsect1>
 
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>var</parameter></term>
     <listitem>
      <para>
       The variable being evaluated.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns &true; if <parameter>var</parameter> is a <type>unicode</type>
   string, &false; otherwise.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>is_unicode</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
// Declare a unicode string
$unicode = 'This is a unicode string';

// Declare a binary string
$binary = b'This is a binary string';

var_dump(is_unicode($unicode), is_unicode($binary));
?>
]]>
      </programlisting>
      &example.outputs;
      <screen>
<![CDATA[
bool(true)
bool(false)
]]>
    </screen>
   </example>
  </para>
 </refsect1>
 
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>is_binary</function></member>
    <member><function>is_buffer</function></member>
    <member><function>is_string</function></member>
    <member><function>unicode_encode</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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