tmpfile
I've been trying to set a filemtime into the future with touch() on PHP5.
It seems touch $time has a future limit around 1000000 seconds (11 days or so). Beyond this point it reverts to a previous $time.
It doesn't make much sense but I could save you hours of time.
$time = time()+1500000;
touch($cachedfile,$time);
touch
(PHP 4, PHP 5)
touch — ファイルの最終アクセス時刻および最終更新日をセットする
説明
bool touch
( string $filename
[, int $time
[, int $atime
]] )
filename で指定されたファイルの最終更新日を、 time で指定された値に セットしようと試みます。 パラメータの数にかかわらず、アクセス時刻は 常に変更されることに注意しましょう。
ファイルが存在しない場合、ファイルが生成されます。
パラメータ
- filename
-
処理したいファイルの名前。
- time
-
設定する時刻。 time を省略した場合は、 現在時刻を使用します。
- atime
-
指定されたファイルの最終アクセス時刻が atime にセットされます。
返り値
成功した場合に TRUE を、失敗した場合に FALSE を返します。
例
例1 touch() の例
<?php
if (touch($FileName)) {
echo "$FileName modification time has been changed to present time";
} else {
echo "Sorry, could not change modification time of $FileName";
}
?>
注意
警告
現在は、Windows 環境のもとでは この関数によってディレクトリの最終更新日を変更することはできません。
add a note
User Contributed Notestouch
Jeff
26-Jun-2008 12:29
26-Jun-2008 12:29
Glen
18-Oct-2007 01:01
18-Oct-2007 01:01
In unix on the command-line, you can touch files you don't own - but like other comments on this page state - PHP's built in touch won't work.
I simple alternative (on unix):
<?php
function touch_it_good($filename)
{
exec("touch {$filename}");
}
?>
ilrazziatore85 AT yahoo DOT it
21-May-2007 08:10
21-May-2007 08:10
Feathern wrote a little script for fetching files from a directory after a certain date.
However the if statement (line 8) should be:
if(($test[2] > 2002) || (($test[2] = 2002) && ($test[0] > 6)) || (($test[2] = 2002) && ($test[0] = 6) && ($test[1] > 17))){
echo $filelist[$i]."\r\n";
}
Otherwise the script won't fetch lots of files it should.
(In the example given, it should fetch all the files created after 06/17/2002, but the original script would miss files created 03/18/2003 or 11/01/2004)
seocab at rit dot edu
31-Mar-2007 09:09
31-Mar-2007 09:09
The script for modifying the access time without modifying the modified time is overly complicated:
<? touch($filename, date('U', filemtime($filename)), time()); ?>
Since filemtime returns a UNIX timestamp, there is no need to call date('U') so the script could be simplified to:
<? touch($filename,filemtime($filename),time()); ?>
Charles Belov
18-Jul-2006 06:10
18-Jul-2006 06:10
Update the access time without updating the modified time:
Unix command: touch -a filename
PHP: touch(filename, date('U', filemtime(filename)), time())
spam at webmastersguide dot com
01-Sep-2005 05:09
01-Sep-2005 05:09
If you're going to go around deleting (unlinking) files
that you don't own just in order to change the modification
time on the file, you darn well better chown() the file
back to it's original ownership after you are done and
chmod() it back to it's correct permissions. Otherwise
you will almost certainly break things. Additionally the
code listed for touch()ing a file you don't own should
set the file creation time back to it's original time if
what is wanted is to just change the modification time.
Also, the code listed will break things if there is an i/o
error such as disk full or too many files in the directory.
Here's how the code SHOULD be written:
Create the new file FIRST, rather than last, with a different
name such as $file.tmp.
Read the ownership, permissions, and creation time of the old file.
Set permissions and creation time of the new file the same as the old.
Rename the new file to the name of the old.
chown() the new file to the user that owned the file it's replacing.
Please be careful adding to the documentation if you've
never taken programming 101.
rf_public at yahoo dot co dot uk
25-Jul-2005 12:19
25-Jul-2005 12:19
Note: the script to touch a file you don't own will change it's owner so ensure permissions are correct or you could lose access to it
guy at forster design dot com
12-May-2005 03:42
12-May-2005 03:42
Here's a little workaround that allows the PHP user to touch a file it doesn't own:
<?php
$target_file = "/path/to/file/filename.txt"; //system filepath to your file
$file_content = implode("",file($target_file));
@unlink($target_file);
if($savetofile = fopen($target_file, "w")) {
fputs($savetofile, $file_content);
fclose($savetofile);
}
$new_date = strtotime("23 April 2005"); // set the required date timestamp here
touch($target_file,$new_date);
?>
Of course, PHP needs to have write access to the folder containing the file you want to touch, but that should be easy to arrange.
feathern at yahoo dot com
13-Aug-2002 03:31
13-Aug-2002 03:31
Neat little script that will give you a list of all modified files in a certain folder after a certain date:
$filelist = Array();
$filelist = list_dir("d:\\my_folder");
for($i=0;$i<count($filelist);$i++){
$test = Array();
$test = explode("/",date("m/d/Y",filemtime($filelist[$i])));
//example of files that are later then
//06/17/2002
if(($test[2] > 2001) && ($test[1] > 16) && ($test[0] > 5)){
echo $filelist[$i]."\r\n";
}
clearstatcache();
}
function list_dir($dn){
if($dn[strlen($dn)-1] != '\\') $dn.='\\';
static $ra = array();
$handle = opendir($dn);
while($fn = readdir($handle)){
if($fn == '.' || $fn == '..') continue;
if(is_dir($dn.$fn)) list_dir($dn.$fn.'\\');
else $ra[] = $dn.$fn;
}
closedir($handle);
return $ra;
}
emilebosch at hotmail dot com
06-Oct-2001 03:41
06-Oct-2001 03:41
To spare you ppl couple of hours of valuable time, you can only TOUCH a file that you own! Usually PHP is *nobody*
Warm regards,
Emile Bosch
master at dreamphp dot com
15-May-2001 11:23
15-May-2001 11:23
$filename = "test.dat";
if (!file_exists($filename)) {
touch($filename); // Create blank file
chmod($filename,0666);
}