I need to make a function which creates multidimensional array, with adjustable number of rows and columns, and generated random numbers of each row, also adjustable

I have this attempt now, but it seems to go into an infinite loop:

function make($length, $start, $end)
{
  if ($length < abs($start - $end)   1)
  {
    for ($i = 0; $i < $length; $i  )
    {
      while (!isset($array) || count($array) < $length)
      {
        $vel = rand($start, $end);
    
        if (!isset($array) || !in_array($vel, $array))
        {
          $array[$i][] = $vel;
        }
      }
    }
    
    return $array;
  } 
  else 
  {
    return false;
  }
}

Please help, I can`t seem to figure it out

I am calling it like the following:

$array5 = make(10, 15, 35);

The end result should look like the following (having the same number of rows as columns):

CodePudding user response：

You were not checking the right array parts in the loops

function make($length,$start,$end)
{
    if ($length<abs($start-$end) 1){
        for ($i=0; $i < $length; $i  ){
            while (!isset($array[$i]) || count($array[$i])<$length){
//                              ^^^^                 ^^^^
                $vel=rand($start,$end);
                if (!isset($array[$i]) || !in_array($vel,$array[$i])){
//                               ^^^^                          ^^^^
                    $array[$i][]=$vel;
                }
            }
        }
    
        return $array;
    } else {
        return false;
    }
}

print_r( make(5,10,30) );

The RESULT

Array
(
    [0] => Array
        (
            [0] => 30
            [1] => 16
            [2] => 27
            [3] => 17
            [4] => 26
        )

    [1] => Array
        (
            [0] => 21
            [1] => 13
            [2] => 19
            [3] => 25
            [4] => 12
        )

    [2] => Array
        (
            [0] => 12
            [1] => 28
            [2] => 20
            [3] => 19
            [4] => 27
        )

    [3] => Array
        (
            [0] => 23
            [1] => 17
            [2] => 12
            [3] => 16
            [4] => 15
        )

    [4] => Array (
            [0] => 17
            [1] => 11
            [2] => 22
            [3] => 13
            [4] => 10
        )
)