TaskLoop

A PHP implementation of a bare task loop.

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Installation.

$ composer require thenlabs/task-loop

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.

A task can be a callable or an object which implements the ThenLabs\TaskLoop\TaskInterface interface.

<?php

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

use ThenLabs\TaskLoop\{TaskLoop, CallableTask};

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

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

// adds the task1.
$loop->addTask(function (CallableTask $task) {
    static $counter = 10;

    echo date(DATE_FORMAT)." Task1: {$counter}\n";
    $counter--;

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

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

// adds the task2.
$loop->addTask(function (CallableTask $task) {
    static $counter = 5;

    echo date(DATE_FORMAT)." Task2: {$counter}\n";
    $counter--;

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

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

$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