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Question

How to genenerate 24 random numbers between 1 and 24 in PHP?

Answer 1

+8 A:

You can use shuffle

$numbers = range(1, 24);
shuffle($numbers);

nico 2010-10-26 17:45:20

+1 you beat me to it :P

GWW 2010-10-26 17:46:10

@GWW: stop reading my mind! :P

nico 2010-10-26 17:46:56

@nico If only the ability didn't have a 20 second lag period.

GWW 2010-10-26 17:48:37

How would i lets say store the shuffle values in 24 different variables?I tried this: $numbers = range(1, 24); $one = shuffle($numbers); $two = shuffle($numbers); echo $one; echo '<br />3'; echo $two;

mirza 2010-10-26 17:58:46

@mirza: `$numbers` is an array of 24 elements, so it is like having 24 variables. You just access them with `$numbers[0]`, `$numbers[1]`, and so on up to `$numbers[23]`. The whole point of using arrays is not to have lots of variables around. Of course you could do `$one = $numbers[0]`, `$two = $numbers[1]` etc. but that would be pointless.

nico 2010-10-26 18:08:14

@mirza: also, note that `shuffle` does NOT return a shuffled version of the array, it modifies the original variable. The return value is just the status of the call (`TRUE` or `FALSE` for success or failure)

nico 2010-10-26 18:10:05

@mirza if you are dead set no not using an array you could use list($a1, $a2, ... , $a24) = $numbers; (fill in the ... with the rest of the variable names)

GWW 2010-10-26 18:35:13

Answer 2

+4 A:

$a = range(1,24);
shuffle ( $a );

GWW 2010-10-26 17:45:40

Answer 3

+1 A:

What you're looking for is not 24 truly random numbers (which could randomly be all identical... although the odds are not in your favour), but actually just a shuffling algorithm.

Try shuffle on an array in PHP instead.

Rudu 2010-10-26 17:46:52

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How to genenerate 24 random numbers between 1 and 24 in PHP?

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