PHP code example of pwm / deepend

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

pwm / deepend example snippets

// Create an empty store
$deepEnd = new DeepEnd();

// Add some entries, in our example they are the task ids
$deepEnd->add('t1');
$deepEnd->add('t2');
$deepEnd->add('t3');
$deepEnd->add('t4');

// Specify dependencies between them. A pointing to B, ie. an arrow from A to B,
// means that B depends on A therefore A has to happen before B can happen.
$deepEnd->draw((new Arrow)->from('t1')->to('t2'));
$deepEnd->draw((new Arrow)->from('t1')->to('t3'));
$deepEnd->draw((new Arrow)->from('t2')->to('t4'));

// Get a valid execution order
$order = $deepEnd->sort(); // $order = ['t1', 't3', 't2', 't4']

function taskRunner(string $taskId, string $taskData): void
{
    echo sprintf('Running task %s with data %s ... done.', $taskId, $taskData) . PHP_EOL;
}

$deepEnd = new DeepEnd();

$deepEnd->add('t1', 't1-data');
$deepEnd->add('t2', 't2-data');
$deepEnd->add('t3', 't3-data');
$deepEnd->add('t4', 't4-data');

$deepEnd->draw((new Arrow)->from('t1')->to('t2'));
$deepEnd->draw((new Arrow)->from('t1')->to('t3'));
$deepEnd->draw((new Arrow)->from('t2')->to('t4'));

$orderedTasks = $deepEnd->sortToMap();
foreach ($orderedTasks as $taskId => $taskData) {
    taskRunner($taskId, $taskData);
}

// Running task t1 with data t1-data ... done.
// Running task t3 with data t3-data ... done.
// Running task t2 with data t2-data ... done.
// Running task t4 with data t4-data ... done.