PHP > 1 to 6 rand() > Go!

[PMWD]

Hi guys

Bit of an afternoon head fuddle, basically I've got 6 items and 3 spaces, so I want to randomly generate 3 numbers from 1 to 6 with no repeats, bang them into an array then use those to pull out the items corresponding to the numbers.

Help! Thanks

 

[daz]

Something like...

$numbers= array("1","2","3","4","5","6");

$number1 = $numbers[array_rand($numbers)];
$number2 = $numbers[array_rand($numbers)];

while($number2==$number1)
{ $number2 = $numbers[array_rand($numbers)]; }

$number3 = $numbers[array_rand($numbers)];
while($number3 == $number2 || $number3 == $number1)
{ $number3 = $numbers[array_rand($numbers)]; }

Then you have your three digits, that are all different and randomly generated...

You might want to change the numbers to 0-5 if you're pulling items from an array though (because an array starts at item 0).

 

[Inquisitor]

Three-liner:

$numbers = range(1, 6);
shuffle($numbers);
$numbers = array_slice(0, 3);

 

[marc2003]

$numbers = range(1,6);
shuffle($numbers);
$your_array = array($numbers[0], $numbers[1], $numbers[2]);

edit: oh balls, too slow

 

[Inquisitor]

Almost identical code snippets – high five

P.S. Did you see my question in the media player thread?

 

[daz]

Hehe much smarter and much more elegant solutions!

 

[marc2003]

P.S. Did you see my question in the media player thread?

answered.

 

[PMWD]

Brilliant guys, thank you all for your help

 

[Cenuij]

For the sake of throwing in a one liner

$numbers = array(rand(1,6), rand(1,6), rand(1,6));

 

[marc2003]

not good enough.

so I want to randomly generate 3 numbers from 1 to 6 with no repeats

 

[Inquisitor]

For the sake of throwing in a one liner

$numbers = array(rand(1,6), rand(1,6), rand(1,6));

This doesn't necessarily produce three distinct numbers, though. What the OP is asking for isn't really three random numbers, but a random ordering of three numbers.

 

[Cenuij]

This doesn't necessarily produce three distinct numbers, though. What the OP is asking for isn't really three random numbers, but a random ordering of three numbers.

As I see, helps to read the question more carefully

$numbers = array_rand(range(1,6), 3);

 

[Inquisitor]

As I see, helps to read the question more carefully

$numbers = array_rand(range(1,6), 3);

This generates numbers from 0 to 5, since array_rand gets keys rather than values

 

[Cenuij]

This generates numbers from 0 to 5, since array_rand gets keys rather than values

so you'd have to flip ze array!

$numbers = array_rand(array_flip(range(1,6)), 3);