PHP code example of klkvsk / json-decode-stream

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

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

    

klkvsk / json-decode-stream example snippets

$parser = \JsonDecodeStream\Parser::fromFile("users.json"); 
foreach ($parser->items("users[]") as $user) {
    echo $user->name; 
}
// or
foreach ($parser->items("users[].name") as $name) {
    echo $name; 
}

class AggregationCollector implements CollectorInterface
{
    protected int $count;
    protected float $sum;
    
    public function processEvent(Event $event)
    {
        switch ($event->getId()) {
            case Event::DOCUMENT_START:
                $this->count = 0;
                $this->sum = 0;
                break;
            
            case Event::VALUE:
                if ($event->matchPath("games[].score")) {
                    $this->sum += $event->getValue();
                    $this->count++;
                }
                break;

            case Event::DOCUMENT:END:
                yield [ 'count', $this->count ];
                yield [ 'sum', $this->sum ];
                yield [ 'avg', $this->count ? ($this->sum / $this->count) : 0 ];
                break;
        }
    }
}

$aggregates = iterator_to_array($parser->items(new AggregationCollector()));
var_dump($aggregates); // [ 'count' => 10, 'sum' => 50, 'avg' => 5 ]