SimplePie::merge_items( SimplePie\array<SimplePie> $urls, int $start = 0, int $end = 0, int $limit = 0 ): SimplePie\array<Item>

3366    public static function merge_items(array $urls, int $start = 0, int $end = 0, int $limit = 0)3367    {3368        if (count($urls) > 0) {3369            $items = [];3370            foreach ($urls as $arg) {3371                if ($arg instanceof SimplePie) {3372                    $items = array_merge($items, $arg->get_items(0, $limit));3373 3374                    // @phpstan-ignore-next-line Enforce PHPDoc type.3375                } else {3376                    trigger_error('Arguments must be SimplePie objects', E_USER_WARNING);3377                }3378            }3379 3380            usort($items, [get_class($urls[0]), 'sort_items']);3381 3382            if ($end === 0) {3383                return array_slice($items, $start);3384            }3385 3386            return array_slice($items, $start, $end);3387        }3388 3389        trigger_error('Cannot merge zero SimplePie objects', E_USER_WARNING);3390        return [];3391    }