php-doc-en/reference/array/functions/current.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.current" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>current</refname>
  <refpurpose>Return the current element in an array</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>mixed</type><methodname>current</methodname>
   <methodparam><type>array</type><parameter role="reference">array</parameter></methodparam>
  </methodsynopsis>
  <para>
   Every array has an internal pointer to its "current" element,
   which is initialized to the first element inserted into the
   array.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>array</parameter></term>
     <listitem>
      <para>
       The array.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The <function>current</function> function simply returns the
   value of the array element that's currently being pointed to by the
   internal pointer.  It does not move the pointer in any way.  If the
   internal pointer points beyond the end of the elements list or the array is 
   empty, <function>current</function> returns &false;.
  </para>
  &return.falseproblem;
 </refsect1>
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Example use of <function>current</function> and friends</title>
    <programlisting role="php">
<![CDATA[
<?php
$transport = array('foot', 'bike', 'car', 'plane');
$mode = current($transport); // $mode = 'foot';
$mode = next($transport);    // $mode = 'bike';
$mode = current($transport); // $mode = 'bike';
$mode = prev($transport);    // $mode = 'foot';
$mode = end($transport);     // $mode = 'plane';
$mode = current($transport); // $mode = 'plane';

$arr = array();
var_dump(current($arr)); // bool(false)

$arr = array(array());
var_dump(current($arr)); // array(0) { }
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>
 <refsect1 role="notes">
  &reftitle.notes;
  <note>
   <simpara>
    You won't be able to distinguish the end of an array from a
    <type>boolean</type> &false; element. To properly traverse an array
    which may contain &false; elements, see the <function>each</function>
    function.
   </simpara>
  </note>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>end</function></member>
    <member><function>key</function></member>
    <member><function>each</function></member>
    <member><function>prev</function></member>
    <member><function>reset</function></member>
    <member><function>next</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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