I'm trying to create a PHP file, which wouldn't run if it's already running. Here's the code I'm using:
<?php
class Test {
private $tmpfile;
public function action_run() {
$this->die_if_running();
$this->run();
}
private function die_if_running() {
$this->tmpfile = @fopen('.refresher2.pid', "w");
$locked = @flock($this->tmpfile, LOCK_EX|LOCK_NB);
if (! $locked) {
@fclose($this->tmpfile);
die("Running 2");
}
}
private function run() {
echo "NOT RUNNNING";
sleep(100);
}
}
$test = new Test();
$test->action_run();
The problem is, when I run this from console, it works great. But when I try to run it from browser, many instances can run simultaneously. This is on Windows 7, XAMPP, PHP 5.3.2. I guess OS is thinking that it's the same process and thus the functionality falls. Is there a cross-platform way to create a PHP script of this type?