src/Services/RegistryProcessor.php
public function raiseCounter($key, $counterName)
    {

        // raise/initialize the value
        if (isset($this->attributes[$key][$counterName])) {
            $this->attributes[$key][$counterName]++;
        } else {
            $this->attributes[$key][$counterName] = 1;
        }

        // return the new value
        return $this->attributes[$key][$counterName];
    }
public function raiseCounter($key, $counterName)
    {

        // raise/initialize the value
        if (isset($this->attributes[$key][$counterName])) {
            $this->attributes[$key][$counterName]++;
        } else {
            $this->attributes[$key][$counterName] = 1;
        }

        // return the new value
        return $this->attributes[$key][$counterName];
    }
Raises the value for the attribute with the passed key by one.

@param mixed $key         The key of the attribute to raise the value for
@param mixed $counterName The name of the counter to raise

@return integer The counter's new value