Simple number distribution in array php - php

Question

I want to distribute in array to get homogeneous distribution.
I created an array with array_fill, and set a variable $fill with a valor up to 20 to distribute in that array.
What I need to get as result - for example:
$fill = 5;
// returns
Array (
[0] => 0
[1] => 0
[2] => 0
[3] => 1
[4] => 0
[5] => 0
[6] => 0
[7] => 1
[8] => 0
[9] => 0
[10] => 0
[11] => 1
[12] => 0
[13] => 0
[14] => 0
[15] => 1
[16] => 0
[17] => 0
[18] => 0
[19] => 1
)
$fill = 10;
// returns
Array (
[0] => 0
[1] => 1
[2] => 0
[3] => 1
[4] => 0
[5] => 1
[6] => 0
[7] => 1
[8] => 0
[9] => 1
[10] => 0
[11] => 1
[12] => 0
[13] => 1
[14] => 0
[15] => 1
[16] => 0
[17] => 1
[18] => 0
[19] => 1
)
What should I do for, $fill = 6, 18 or even 19 ?
Edit 1:
The remainders I don't have preference to start or end, I need to fill the array with at least fair distribution, so when I foreach the array, I don't get a long sequence of 1 or 0.
I tried this
$fill = 5;
$arr = array_fill(0,20,0);
$gap = 20 / $fill;
foreach($arr as $k=>$v) {
if( is_int($k / $gap) ) {
$arr[$k] = 1;
}
}
print_r($arr);
but it doesn't work with 8,12 or 18
Edit 2:
Sorry for the complication, I just need to fill the array with all 5,10 or 18 '1's, don't necessary the same quantity for zeros, but at least this:
$fill = 18;
// returns
Array (
[0] => 1
[1] => 1
[2] => 1
[3] => 1
[4] => 1
[5] => 0
[6] => 1
[7] => 1
[8] => 1
[9] => 1
[10] => 1
[11] => 1
[12] => 1
[13] => 1
[14] => 1
[15] => 0
[16] => 1
[17] => 1
[18] => 1
[19] => 1
)

Answer 1

You can do it like below :
<?php
function getArray($fill,$noOfItem){
$maxIndex = floor($noOfItem/$fill);
$rang = range(1,20);
$finalArray = [];
foreach($rang as $key => $val){
if($val % $maxIndex == 0 && array_sum($finalArray) < $fill){
$finalArray[] =1;
}else{
$finalArray[] =0;
}
}
print_r($finalArray);
}
getArray(6,20);
getArray(8,20);
getArray(19,20);
Output: https://3v4l.org/QY6HQ And https://3v4l.org/gQeHa (for a bit uniformity)
Note: Uniformity of 0 and 1 is not 100% guarantee in above answer.