(PHP 4, PHP 5, PHP 7, PHP 8)
touch — Sets access and modification time of file
Attempts to set the access and modification times of the file named in the
filename
parameter to the value given in
mtime
.
Note that the access time is always modified, regardless of the number
of parameters.
If the file does not exist, it will be created.
filename
The name of the file being touched.
mtime
The touch time. If mtime
is null
,
the current system time() is used.
atime
If not null
, the access time of the given filename is set to
the value of atime
. Otherwise, it is set to
the value passed to the mtime
parameter.
If both are null
, the current system time is used.
Версія | Опис |
---|---|
8.0.0 |
mtime and atime
are now nullable.
|
Приклад #1 touch() example
<?php
if (touch($filename)) {
echo $filename . ' modification time has been changed to present time';
} else {
echo 'Sorry, could not change modification time of ' . $filename;
}
?>
Приклад #2 touch() using the mtime
parameter
<?php
// This is the touch time, we'll set it to one hour in the past.
$time = time() - 3600;
// Touch the file
if (!touch('some_file.txt', $time)) {
echo 'Whoops, something went wrong...';
} else {
echo 'Touched file with success';
}
?>
Зауваження:
Варто зауважити, що точність часових міток у різних файлових систем може бути різна.