src/Zicht/Itertools/lib/UniqueIterator.php
public function accept()
    {
        $checkValue = call_user_func($this->func, $this->current(), $this->key());
        if (in_array($checkValue, $this->seen)) {
            return false;
        } else {
            $this->seen [] = $checkValue;
            return true;
        }
    }
public function accept()
    {
        $checkValue = call_user_func($this->func, $this->current(), $this->key());
        if (in_array($checkValue, $this->seen)) {
            return false;
        } else {
            $this->seen [] = $checkValue;
            return true;
        }
    }
{@inheritdoc}