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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 297028 $ -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.file-exists">
<refnamediv>
<refname>file_exists</refname>
<refpurpose>Checks whether a file or directory exists</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>file_exists</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
</methodsynopsis>
<para>
Checks whether a file or directory exists.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>filename</parameter></term>
<listitem>
<para>
Path to the file or directory.
</para>
<para>
On windows, use <filename>//computername/share/filename</filename> or
<filename>\\computername\share\filename</filename> to check files on
network shares.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns &true; if the file or directory specified by
<parameter>filename</parameter> exists; &false; otherwise.
</para>
<note>
<para>
This function will return &false; for symlinks pointing to non-existing
files.
</para>
</note>
<warning>
<para>
This function returns &false; for files inaccessible due to <link
linkend="features.safe-mode">safe mode</link> restrictions. However these
files still can be <link linkend="function.include">included</link> if
they are located in <link
linkend="ini.safe-mode-include-dir">safe_mode_include_dir</link>.
</para>
</warning>
<note>
<para>
The check is done using the real UID/GID instead of the effective one.
</para>
</note>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title>Testing whether a file exists</title>
<programlisting role="php">
<![CDATA[
<?php
$filename = '/path/to/foo.txt';
if (file_exists($filename)) {
echo "The file $filename exists";
} else {
echo "The file $filename does not exist";
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
¬e.clearstatcache;
&tip.fopen-wrapper.stat;
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>is_readable</function></member>
<member><function>is_writable</function></member>
<member><function>is_file</function></member>
<member><function>file</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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