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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- splitted from ./en/functions/dir.xml, last change in rev 1.2 -->
<refentry xml:id="function.dir" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>dir</refname>
<refpurpose>Return an instance of the Directory class</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type class="union"><type>Directory</type><type>false</type></type><methodname>dir</methodname>
<methodparam><type>string</type><parameter>directory</parameter></methodparam>
<methodparam choice="opt"><type class="union"><type>resource</type><type>null</type></type><parameter>context</parameter><initializer>&null;</initializer></methodparam>
</methodsynopsis>
<para>
A pseudo-object-oriented mechanism for reading a directory. The
given <parameter>directory</parameter> is opened.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>directory</parameter></term>
<listitem>
<para>
Directory to open
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>context</parameter></term>
<listitem>
¬e.context-support;
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an instance of <classname>Directory</classname>, or &false; in case of error.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
<parameter>context</parameter> is now nullable.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>dir</function> example</title>
<para>
Please note the fashion in which <function>Directory::read</function>'s
return value is checked in the example below. We are explicitly
testing whether the return value is identical to (equal to and of
the same type as - see <link linkend="language.operators.comparison">
Comparison Operators</link> for more information) &false; since
otherwise, any directory entry whose name evaluates to &false; will
stop the loop.
</para>
<programlisting role="php">
<![CDATA[
<?php
$d = dir("/etc/php5");
echo "Handle: " . $d->handle . "\n";
echo "Path: " . $d->path . "\n";
while (false !== ($entry = $d->read())) {
echo $entry."\n";
}
$d->close();
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Handle: Resource id #2
Path: /etc/php5
.
..
apache
cgi
cli
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
The order in which directory entries are returned by the read method is
system-dependent.
</para>
</note>
</refsect1>
</refentry>
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