A PHP implementation of a bare task loop.

Overview

TaskLoop

A PHP implementation of a bare task loop.

Installation.

$ composer require thenlabs/task-loop 1.0.x-dev

Usage.

The file example.php contains the below code which show that once the loop is started, it will runs each one of his tasks.

Each loop iteration is executed with a time interval which it's specified with the start() method.

Like can be seen, for create the tasks exists the class ThenLabs\TaskLoop\AbstractTask which has some useful methods, but any instance of the interface ThenLabs\TaskLoop\TaskInterface may be considered as a task.

<?php

require_once __DIR__.'/vendor/autoload.php';

use ThenLabs\TaskLoop\{AbstractTask, TaskLoop};

define('DATE_FORMAT', 'Y-m-d H:i:s');

// create a loop instance.
$loop = new TaskLoop();

// adds the task1.
$loop->addTask(new class extends AbstractTask {

    protected $counter = 10;

    public function run(): void
    {
        echo date(DATE_FORMAT)." Task1: {$this->counter}\n";
        $this->counter--;

        if ($this->counter <= 0) {
            echo date(DATE_FORMAT)." Task1: End\n\n";

            // when task1 ends, the loop will be stopped.
            $this->loop->stop();
        }
    }
});

// adds the task2.
$loop->addTask(new class extends AbstractTask {

    protected $counter = 5;

    public function run(): void
    {
        echo date(DATE_FORMAT)." Task2: {$this->counter}\n";
        $this->counter--;

        if ($this->counter <= 0) {
            echo date(DATE_FORMAT)." Task2: End\n\n";

            // when task2 ends, will be dropped from the loop.
            $this->loop->dropTask($this);
        }
    }
});

$delay = 1000000; // value for the usleep function.
$loop->start($delay);

echo 'Good bye!';

That file produce the next result:

2021-10-09 11:30:31 Task1: 10
2021-10-09 11:30:31 Task2: 5
2021-10-09 11:30:32 Task1: 9
2021-10-09 11:30:32 Task2: 4
2021-10-09 11:30:33 Task1: 8
2021-10-09 11:30:33 Task2: 3
2021-10-09 11:30:34 Task1: 7
2021-10-09 11:30:34 Task2: 2
2021-10-09 11:30:35 Task1: 6
2021-10-09 11:30:35 Task2: 1
2021-10-09 11:30:35 Task2: End

2021-10-09 11:30:36 Task1: 5
2021-10-09 11:30:37 Task1: 4
2021-10-09 11:30:38 Task1: 3
2021-10-09 11:30:39 Task1: 2
2021-10-09 11:30:40 Task1: 1
2021-10-09 11:30:40 Task1: End

Good bye!

Development.

Running the tests.

For run the tests, runs the next command:

$ ./vendor/bin/pyramidal
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