php-doc-en/reference/filesystem/functions/filectime.xml
2003-12-15 16:55:22 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.6 $ -->
<!-- splitted from ./en/functions/filesystem.xml, last change in rev 1.2 -->
<refentry id="function.filectime">
<refnamediv>
<refname>filectime</refname>
<refpurpose>Gets inode change time of file</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>int</type><methodname>filectime</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
</methodsynopsis>
<para>
Returns the time the file was last changed, or &false; in case of
an error. The time is returned as a Unix timestamp.
</para>
<para>
Note: In most Unix filesystems, a file is considered
changed when its inode data is changed; that is, when
the permissions, owner, group, or other metadata
from the inode is updated. See also
<function>filemtime</function> (which is what you want to use
when you want to create "Last Modified" footers on web pages) and
<function>fileatime</function>.
</para>
<para>Note also that in some Unix texts the ctime of a file is
referred to as being the creation time of the file. This is wrong.
There is no creation time for Unix files in most Unix filesystems.
</para>
&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 changed: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last changed: " . date("F d Y H:i:s.", filectime($filename));
}
?>
]]>
</programlisting>
</example>
</para>
<simpara>
See also <function>filemtime</function>
</simpara>
</refsect1>
</refentry>
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