01 函数是什么 函數 高中數學

array(10) { [0]=> object(stdClass)#4006 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "dZ_D-r6WLJ8" ["related_video_title"]=> string(31) "02 区间 函數 高中數學" ["posted_time"]=> string(19) "6 лет назад" ["channelName"]=> string(27) "凌海燕（小樂學堂）" } [1]=> object(stdClass)#3979 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "QYqR08brM88" ["related_video_title"]=> string(27) "3-1-1 基本函數的介紹" ["posted_time"]=> string(20) "12 лет назад" ["channelName"]=> string(10) "NCUx Media" } [2]=> object(stdClass)#4004 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "CLMLBG_XpJ8" ["related_video_title"]=> string(102) "为什么高中要学三角函数？高考一定要考三角函数吗？世界是三角函数的？！" ["posted_time"]=> string(19) "1 год назад" ["channelName"]=> string(12) "火星课堂" } [3]=> object(stdClass)#4011 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "kRP9RGW3_9s" ["related_video_title"]=> string(56) "01变量与函数 一次函数 初中数学初二" ["posted_time"]=> string(19) "5 лет назад" ["channelName"]=> string(27) "凌海燕（小樂學堂）" } [4]=> object(stdClass)#3990 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "FnGXv0hdlZw" ["related_video_title"]=> string(120) "「為什麼中國必須封掉 Google？」20 分鐘拆解 GFW 黑歷史｜YouTube 搜索 Gmail 都難逃｜左耳故事" ["posted_time"]=> string(19) "4 дня назад" ["channelName"]=> string(12) "左耳故事" } [5]=> object(stdClass)#4008 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "blWdjRUPP6E" ["related_video_title"]=> string(72) "Разведчик о том, как использовать людей" ["posted_time"]=> string(25) "2 недели назад" ["channelName"]=> string(18) "Коллектив" } [6]=> object(stdClass)#4003 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "C-TsuHseZkg" ["related_video_title"]=> string(168) "ПРЕМЬЕРА СВЕЖЕГО ДЕТЕКТИВА 2025 ИЗ ФРАНЦУЗСКОЙ КОЛЛЕКЦИИ "УБИЙСТВА В..."!Убийство в Гильвинеке" ["posted_time"]=> string(21) "7 дней назад" ["channelName"]=> string(10) "Filmegator" } [7]=> object(stdClass)#4013 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "ob55zzmL6-M" ["related_video_title"]=> string(12) "二次函數" ["posted_time"]=> string(19) "6 лет назад" ["channelName"]=> string(11) "Stepp學院" } [8]=> object(stdClass)#3989 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "l3yNue5QAUk" ["related_video_title"]=> string(16) "什麼是函數?" ["posted_time"]=> string(19) "6 лет назад" ["channelName"]=> string(11) "Stepp學院" } [9]=> object(stdClass)#4007 (5) { ["video_id"]=> int(9999999) ["related_video_id"]=> string(11) "rrugyyzW58g" ["related_video_title"]=> string(21) "函數的基本觀念" ["posted_time"]=> string(20) "12 лет назад" ["channelName"]=> string(11) "CUSTCourses" } }