PHP deletes all subfolders under the folder at a specified time (after a few seconds)

Source: Internet
Author: User
**
* Delete all subfolders under the folder at the specified time (after a few seconds)
* @param $dir String file path
* @param $sec String deletion time
* @param $file _type string file type
*/
function Delfile ($dir, $sec = ' _type= ', $file ') {
if (Is_dir ($dir)) {
$files = Scandir ($dir);
Open the directory//list all the files in the directory and remove them. And..
foreach ($files as $filename) {
Get File creation time
$worn _time=filectime ($dir. $filename);
$new _time=time ();
$time = $new _time-$worn _time;
if ($time > $sec) {
if ($filename!= '. ' && $filename!= ' ... ') {
if (!is_dir ($dir. '/'. $filename)) {
if (Empty ($file _type)) {
Unlink ($dir. '/'. $filename);
}else{
if (Is_array ($file _type)) {
Matches the specified file in a regular match
if (Preg_match ($file _type[0], $filename)) {
Unlink ($dir. '/'. $filename);
}
}else{
Specify files that contain certain strings
if (False!=stristr ($filename, $file _type)) {
Unlink ($dir. '/'. $filename);
}
}
}
}else{
Delfile ($dir. '/'. $filename);
RmDir ($dir. '/'. $filename);
}
}
}
}
}else{
if (file_exists ($dir)) unlink ($dir);
}
}

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