WeberDev.com -> PHP Manual -> Sets access and modification time of file

Description

bool touch ( string $filename [, int $time [, int $atime ]] )

Attempts to set the access and modification times of the file named in the filename parameter to the value given in time . Note that the access time is always modified, regardless of the number of parameters.

If the file does not exist, it will be created.

Parameters

filename: The name of the file being touched.
time: The touch time. If time is not supplied, the current system time is used.
atime: If present, the access time of the given filename is set to the value of atime

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #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";
}
?>

Notes

Warning

It is not currently possible to change the modification time of a directory with this function under Windows.