PHP code example of pe / component-flow

1. Go to this page and download the library: Download pe/component-flow library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

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

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

pe / component-flow example snippets



namespace App;

use PE\Flow\Definition\Flow;
use PE\Flow\Definition\Link;
use PE\Flow\Definition\Node;
use PE\Flow\Definition\Port;
use PE\Flow\Processing\Executor;
use PE\Flow\Processing\ProcessorInterface;
use PE\Flow\Validation\Validator;

// Create flow (step order is important)
$flow = new Flow('flow', ['label' => 'Automation']);
// Step 1: add blocks
$flow->addNode(new Node('block1', 'start'))
$flow->addNode(new Node('block2', 'process'))
$flow->addNode(new Node('block3', 'stop'))
// Step 2: add blocks ports
$flow->addPort(new Port('port1', Port::TYPE_O, 'block1'));
$flow->addPort(new Port('port2', Port::TYPE_I, 'block2'));
$flow->addPort(new Port('port3', Port::TYPE_O, 'block2'));
$flow->addPort(new Port('port4', Port::TYPE_I, 'block3'));
// Step 3: link blocks ports
$flow->addLink(new Link('link1', 'port1', 'port2'));
$flow->addLink(new Link('link2', 'port3', 'port4'));

// For ensure flow is executable you can run validation
$isValid = (new Validator())->validate($flow, $messages);

if ($isValid) {
    // If valid you can execute flow
    // At least one processor