php-doc-en/reference/filesystem/functions/fileatime.xml
Dave Barr 5aa855b67e - Typo.
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@166223 c90b9560-bf6c-de11-be94-00142212c4b1
2004-08-13 01:00:48 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<!-- splitted from ./en/functions/filesystem.xml, last change in rev 1.2 -->
<refentry id="function.fileatime">
<refnamediv>
<refname>fileatime</refname>
<refpurpose>Gets last access time of file</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>fileatime</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
</methodsynopsis>
<simpara>
Returns the time the file was last accessed, or &false; in case of
an error. The time is returned as a Unix timestamp.
</simpara>
<simpara>
Note: The atime of a file is supposed to change whenever
the data blocks of a file are being read. This can be
costly performance-wise when an application regularly
accesses a very large number of files or directories. Some
Unix filesystems can be mounted with atime updates disabled
to increase the performance of such applications; USENET
news spools are a common example. On such filesystems
this function will be useless.
</simpara>
&note.clearstatcache;
&tip.fopen-wrapper.stat;
<para>
<example>
<title><function>fileatime</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
// outputs e.g. somefile.txt was last accessed: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last accessed: " . date("F d Y H:i:s.", fileatime($filename));
}
?>
]]>
</programlisting>
</example>
</para>
<simpara>
See also <function>filemtime</function>,
<function>fileinode</function>, and
<function>date</function>.
</simpara>
</refsect1>
</refentry>
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