根据数组索引在输出中创建换行符

Question

I want to display output like this:

1 2 3 4
5 6 7 8
9 1 2

I've tried this code:

$num = ['1','2','3','4','....'];
$size = sizeof($num) / 4;
foreach ($num as $key => $value) {
  echo $value;
  if($key >= round($size){
    echo "<br>"
  }
}

But the output is like this:

1 2 3 4
5
6
7
8
...

Can anyone suggest how to write the loop?

Answer 1

$num= ['1','2','3','4','5','6','7','8','9'];
$size = sizeof($num) / 4;
foreach ($num as $key => $value){
   echo $value;
   if(($key+1) % 4 == 0){
      echo "<br>";
    }
   }

You can use modulus instead of round. Cool I didn't know about sizeOf! Good to know. Mark this as the right answer pwease if this works!

Another way to do this if you didn't want to write out all the numbers that are in the Num Array is to just push them into an array with a while loop.

$num= [];
$i = 1;

//Set the Num Variable to have as many numbers as you want without having to manually enter them in
while ($i < 100) {
     array_push($num, $i);
     $i++;
}

//Run the actual code that adds breaks ever 4 lines
$size = sizeof($num) / 4;
foreach ($num as $key => $value){
   echo $value;
   if(($key+1) % 4 == 0){
      echo "<br>";
    }
   }