How do I distribute values of an array in three columns?

Question

I need this output..

1 3 5
2 4 6

I want to use array function like array(1,2,3,4,5,6). If I edit this array like array(1

Answer 1

$a = array(1,2,3,4,5);
"{$a[0]} {$a[1]} {$a[2]}\n{$a[3]} {$a[4]}";

or

$a = array(1,2,3,4,5);
"{$a[0]} {$a[1]} {$a[2]}".PHP_EOL."{$a[3]} {$a[4]}";

or

$a = array(1,2,3,4,5);
$second_row_start = 3; // change to vary length of rows
foreach( $a as $index => $value) {
  if($index == $second_row_start) echo PHP_EOL;
  echo "$value ";
}

or, perhaps if you want a longer array split into columns of 3?

$a = array(1,2,3,4,5,6,7,8,9,10,11,12,13);
$row_length = 3; // change to vary length of rows
foreach( $a as $index => $value) {
  if($index%$row_length == 0) echo PHP_EOL;
  echo "$value ";
} 

which gives

1 2 3 
4 5 6 
7 8 9 
10 11 12 
13