Question

I want to remove the whitespace between the arrays, but I’ve used different codes like trim but it does not remove. I think because trim is fro ” ” outside space and not between the words itself. I’m using PHP.

This is for R, but something like this: How to remove all whitespace from a string?

I’ve changed my code to this:

<?php

function combinations($arr, $n)
{
    $res = array();

    foreach ($arr[$n] as $item)
    {
        if ($n==count($arr)-1)
            $res[]=$item;
        else
        {
            $combs = combinations($arr,$n+1);

            foreach ($combs as $comb)
            {
                $res[] = "$item $comb";
            }
        }
    }
    return $res;
}

$words = array(array(
'PY7AD022031',
'AD022031',
'CB5A09XQXU',
),array(
'HELLO', 
'3040',
'3022031',
'07W11',
'4170B',
'0682',
'35570401',
'103448',
), array(
'HELLO', 
'3040',
'3022031',
'07W11',
'4170B',
'0682',
'35570401',
'103448',
));

$combos = combinations($words,0);  

$comma_separated = implode("<br />", $combos);
print("<pre>".print_r($comma_separated,true)."</pre>");
//var_dump($combos);
?>

It echo’s

PY7AD022031 HELLO HELLO
PY7AD022031 HELLO 3040
PY7AD022031 HELLO 3022031
PY7AD022031 HELLO 07W11
PY7AD022031 HELLO 4170B

But I want

PY7AD022031HELLOHELLO
PY7AD022031HELLO3040
PY7AD022031HELLO3022031
PY7AD022031HELLO07W11
PY7AD022031HELLO4170B

Answer 1

it’s simple just change your syntax

$res[] = "$item $comb";

into this syntax :

$res[] = "$item$comb";

remove whitespace in your $res.

have you try it?

---

http://nanamo3lyana.blogspot.com/