tengo problema en unir varios json en php

[xoceunder]

tengo esto

Código PHP:

$movie_num = 0;
                foreach ( GetCategories('series') as $category) {
                    foreach ( ipTV_lib::seriesData() as $id => $serie) {
                        if ($serie['category_id'] != $category['id']) {
                            continue;
                        }
                        if(++$movie_num >= 100) break;
                        $serie_data = array('num' => ++$movie_num, 'name' => $serie['title'], 'series_id' => (int) $serie['id'], 'cover' => $serie['cover'], 'plot' => $serie['plot'], 'cast' => $serie['cast'], 'director' => $serie['director'], 'genre' => $serie['genre'], 'releaseDate' => $serie['releaseDate'], 'last_modified' => $serie['last_modified'], 'rating' => $serie['rating'], 'rating_5based' => number_format($serie['rating'] * 0.5, 1) + 0, 'backdrop_path' => json_decode($serie['backdrop_path'], true), 'youtube_trailer' => $serie['youtube_trailer'], 'episode_run_time' => $serie['episode_run_time'], 'category_id' => !empty($serie['category_id']) ? $serie['category_id'] : null);
                        file_put_contents('datatest.php', array_values($serie['series_data']), LOCK_EX);
                        foreach (array_values(json_decode($serie['seasons'], true)) as $id => $series) {
                            $season_number = 1;
                            $seasons_1['seasons'][] = array('air_date' => $series['air_date'], 'episode_count' => $series['episode_count'], 'id' => $series['id'], 'name' => $series['name'], 'overview' => $series['overview'], 'season_number' => ++$season_number, 'cover' => $series['cover'], 'cover_big' => $series['cover_big'], 'episodet'=> $serie[$id]['series_data']);
                            foreach ($serie['series_data'] as $id => $episodes) {
                                $episode_num = 1;
                                foreach ($episodes as $episode) {
                                    $movie_properties = ipTV_lib::movieProperties($serie['stream_id']);
                                    $episode_2['episodes'][$id][] = array('id' => $episode['stream_id'], 'episode_num' => $episode_num++, 'title' => $episode['stream_display_name'], 'container_extension' => GetContainerExtension($episode['target_container']), 'info' => $movie_properties, 'custom_sid' => $episode['custom_sid'], 'added' => $episode['added'], 'season' => $id, 'direct_source' => !empty($episode['stream_source']) ? json_decode($episode['stream_source'], true)[0] : '');
                                }
                                $seasons_2[] = array_merge($seasons_1,$episode_2);
                            }
                            $seasons_data[] = $seasons_2;
                        }
                       $content[] = array_merge($serie_data,$seasons_data);
                    }
                    $output[$category['category_name']] = $content;
                }
 

y me esta dando este esto
<b>Fatal error</b>: Out of memory (allocated 285212672) (tried to allocate 266342400 bytes) in <b>/home/xtreamcodes/iptv_xtream_codes/wwwdir/roku_api.php</b> on line <b>225</b><br />