Edit file File name : test.php Content :<?php /* Example usage: php -a require 'wp-load.php'; define('I_AM_TESTING', true); require 'test.php'; */ if (!defined('ABSPATH')) die('No direct access.'); if (!defined('I_AM_TESTING') || !I_AM_TESTING) die('Please define I_AM_TESTING.'); require_once(dirname(__FILE__).'/class-updraft-semaphore.php'); class Test_Logger_1 { function log($message, $level) { echo "Test_Logger_1::log(level=$level, message=$message)\n"; } } class Test_Logger_2 { function log($message, $level) { echo "Test_Logger_2::log(level=$level, message=$message)\n"; } } $my_lock = new Updraft_Semaphore_3_0('my_test_lock_name', 4, array(new Test_Logger_1())); if ($my_lock->lock()) { try { // do stuff ... $my_lock_again = new Updraft_Semaphore_3_0('my_test_lock_name', 4, array(new Test_Logger_2())); $time_now = microtime(true); if ($my_lock_again->lock(6)) { echo "Eventually got it after ".round(microtime(true) - $time_now, 3)." seconds\n"; $my_lock_again->release(); } else { echo("Sorry, could not get the second lock\n"); } } catch (Exception $e) { var_dump($e); // We are making sure we release the lock in case of an error } catch (Error $e) { // phpcs:ignore PHPCompatibility.Classes.NewClasses.errorFound var_dump($e); // We are making sure we release the lock in case of an error } $my_lock->release(); } else { echo("Sorry, could not get the first lock\n"); } Save