[1] : select tid from user_post where pid='644426' limit 1 

Array
(
    [tid] => 644427
)
Array
(
    [0] => https://life.tw/albums_photo/11442-201906061835163729.jpg
    [1] => https://life.tw/albums_photo/11442-201906061836252206.jpg
    [2] => https://life.tw/albums_photo/11442-201906061802055693.jpg
    [3] => https://life.tw/albums_photo/11442-20190606182843102.jpg
    [4] => https://life.tw/albums_photo/11442-201906061828432963.jpg
    [5] => https://life.tw/albums_photo/11442-201906061830315704.jpg
    [6] => https://life.tw/albums_photo/11442-201906061831045010.jpg
)
[2] : stage2
[3] : stage3
[4] : https://life.tw/albums_photo/11442-201906061835163729.jpg
Return
(1 : 7)
[5] : https://life.tw/albums_photo/11442-201906061836252206.jpg
(2 : 7)
[6] : https://life.tw/albums_photo/11442-201906061802055693.jpg
(3 : 7)
[7] : https://life.tw/albums_photo/11442-20190606182843102.jpg
(4 : 7)
[8] : https://life.tw/albums_photo/11442-201906061828432963.jpg
(5 : 7)
[9] : https://life.tw/albums_photo/11442-201906061830315704.jpg
(6 : 7)
[10] : https://life.tw/albums_photo/11442-201906061831045010.jpg
(7 : 7)
ReturnStart Cap