取一组数字，然后在php中从该数组中随机取出25个数字

Question

Ok, so I am a bit lost here..

I am pulling profile IDs from an sql database into an array.

i would like to then take that array and randomly pick only 25 numbers each time the array loads, then shuffle up the numbers so there is less likely a chance they will show up in the same order.

Answer 1

You can do this in MySQL directly:

SELECT id FROM profiles ORDER BY RAND() LIMIT 25

RAND() sorts randomly. This should be guarantee enough that "there is less likely a chance they will show up in the same order". If you have more stringent demands on randomness, like uniqueness over draws you might need a more complex solution.