[1] : select tid from user_post where pid='636773' limit 1 

Array
(
    [tid] => 636774
)
Array
(
    [0] => http://play.nownews.com/wp-content/uploads/2019/05/1557831718-615b08b35c99ea116eeac1150d22450d.jpg
    [1] => https://www.nownews.com/wp-content/uploads/2019/05/1557831692-0da39cc4bf902ffc7804963c65b4409f.jpg
    [2] => https://www.nownews.com/wp-content/uploads/2019/05/1557831681-a6ab148c6837b121672a42f72443afa8.jpg
    [3] => https://www.nownews.com/wp-content/uploads/2019/05/1557831706-1f716f10f38aa8a455214d8b64cbc855.jpg
    [4] => https://www.nownews.com/wp-content/uploads/2019/05/1557831734-2390f71f9d01d29104a28b43afb93727.jpg
)
[2] : stage2
[3] : stage3
[4] : http://play.nownews.com/wp-content/uploads/2019/05/1557831718-615b08b35c99ea116eeac1150d22450d.jpg
Return
(1 : 5)
[5] : https://www.nownews.com/wp-content/uploads/2019/05/1557831692-0da39cc4bf902ffc7804963c65b4409f.jpg
(2 : 5)
[6] : https://www.nownews.com/wp-content/uploads/2019/05/1557831681-a6ab148c6837b121672a42f72443afa8.jpg
(3 : 5)
[7] : https://www.nownews.com/wp-content/uploads/2019/05/1557831706-1f716f10f38aa8a455214d8b64cbc855.jpg
(4 : 5)
[8] : https://www.nownews.com/wp-content/uploads/2019/05/1557831734-2390f71f9d01d29104a28b43afb93727.jpg
(5 : 5)
ReturnStart Cap