randomize array using php

Question

I need to rendomise the order of follow array using PHP, i tried to use array shuffle and array_random but no luck, can anyone help me please

Array (
  [0] => Array (
    [value] => 4
    [label] => GasGas
  )
  [1] => Array (
    [value] => 3
    [label] => Airoh Helmets
  )
  [2] => Array (
    [value] => 12
    [label] => XCiting Trials Wear
  )
  [3] => Array (
    [value] => 11
    [label] => Hebo Trials
  )
  [4] => Array (
    [value] => 10
    [label] => Jitsie Products
  )
  [5] => Array (
    [value] => 9
    [label] => Diadora Boots
  )
  [6] => Array (
    [value] => 8
    [label] => S3 Performance
  )
  [7] => Array (
    [value] => 7
    [label] => Scorpa
  )
  [8] => Array (
    [value] => 6
    [label] => Inspired
  )
  [9] => Array (
    [value] => 5
    [label] => Oset
  )
)

how are you trying to shuffle? The shuffle function does randomize the order of elements in an array. — Paul Bain
– Paul Bain, Commented Jul 9, 2012 at 9:08
Take a look at stackoverflow.com/questions/4102777/… which gives you exactly the answer you want. — Doa
– Doa, Commented Jul 9, 2012 at 9:10
I just tested this an it worked for me in codepad: codepad.org/6MmaY81i — Paul Bain
– Paul Bain, Commented Jul 9, 2012 at 9:11

Tom van der Woerdt · Accepted Answer · 2012-07-09 09:13:00Z

4

$array = array(1,2,3,4,5,6,7);
shuffle($array);
print_r($array);

answered Jul 9, 2012 at 9:13

Tom van der Woerdt

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1 Comment

Suneth Kalhara Over a year ago

thanks i got this wrong way before, i shuffle the array and assigned it in to a variable. :)

MaxXx1313 · Accepted Answer · 2012-07-09 09:25:12Z

You can get a random sequence of array index, i think it will allow you to resolve your problem;)

// return random nonrecurring array of numbers
//params:
//$fromto - if $to is null, interval will be [0, $fromto], elsewhere [$fromto, $to]
//$to - end of interval.
//$limit - limit number. notice! if $limit < size([$fromto, $to]) not all numbers from interval [$fromto, $to] will be return
function rand_seq($fromto, $to = null, $limit = null){

if(is_null($to)){
$to = $fromto;
$fromto = 0; }

if(is_null($limit)){
$limit = $to-$fromto+1;

}
$randArr = array();

for($i=$fromto; $i<=$to; $i++){
$randArr[]=$i;

}
$result = array();

for($i=0; $i < $limit||sizeof($randArr) > 0; $i++){
$index = mt_rand(0, sizeof($randArr)-1); // select rand index / выбираем случайный индекс массива
$result[] = $randArr[$index]; // add random element / добавляем случайный элемент массива
array_splice($randArr, $index, 1); // remove it=) / удаляем его =)

}

return $result;
}

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