How------------the PHP algorithm print out the image below

I see it occasionally, so I print it out in PHP.

There are two ways to resolve this issue:

Method One: According to the graph analysis of the graph is a two-dimensional array, two-dimensional array can solve such problems, 6 rows is 6 arrays, each row represents the array of how many elements. If you know the number of elements in each array, do you know which elements are in the array?

function array_chunk_vertical ($arr, $colun) {    $arr _length = count ($arr);    $parem = Floor ($arr _length/$colun);    $pare = $arr _length% $colun;    $ar = Array ();    for ($i = 0; $i < $colun; $i + +) {        $par = $i = = $colun-1? 1:5;        $ar [] = $par;    }    $newarray = Array ();    foreach ($ar as $value) {for        ($i = 0; $i < $value; $i + +) {            $newarray [$i] = Array_shift ($arr);        }    }    return $newarray;} $arr = Range (1, +), $data = Array_chunk_vertical ($arr, 7), foreach ($data as $value) {    foreach ($value as $va) {        printf (' [%2s] ', $va);    }    echo "<br/>";}

Method Two: such as code, first give a size empty array, the empty array to fill the element. Here's how:

<?php function array_chunk_vertical ($input, $size, $preserve _keys = False, $size _is_horizontal = False) {    $chunks = Array ();        if ($size _is_horizontal) {        $chunk _count = ceil (count ($input)/$size);    } else {        $chunk _count = $size;    } For        ($chunk _index = 0; $chunk _index < $chunk _count; $chunk _index++) {        $chunks [] = Array ();    }    $chunk _index = 0;    foreach ($input as $key = + $value)    {        if ($preserve _keys) {            $chunks [$chunk _index][$key] = $value;        } else {            $chunks [$chunk _index][] = $value;        }                if (+ + $chunk _index = = $chunk _count) {            $chunk _index = 0;        }    }        return $chunks;} $data =range (1,31), $newdata =array_chunk_vertical ($data, 6), foreach ($newdata as $root) {    foreach ($root as $val) {        printf (' [%2s] ', $val);    }    echo "<br/>";}

How does the PHP algorithm------------print out