php for loop array length

Question

I have this array:

array('Volvo', 'BMW', 'Toyota', 'Kijang');

And I want results like this

"Volvo","BMW","Toyota","Kijang"
"BMW","Volvo","Toyota","Kijang"
"Toyota","Volvo","BMW","Kijang"
"Kijang","Toyota","Volvo","BMW"

and here's my code :

$products = array('Volvo', 'BMW', 'Toyota', 'Kijang');

$rows = count($products);  

for ($i = 0; $i < $rows; $i++) {

    echo $products[$i] . '<br>';
}

but, unfortunately I missed 3 results :

"BMW","Volvo","Toyota","Kijang"
"Toyota","Volvo","BMW","Kijang"
"Kijang","Toyota","Volvo","BMW"

how to get that missed combination and perfectly works for different array length?

What are you trying to achieve? I'm not seeing how you determined the "results you want", bearing in mind there are 24 permutations of 4 items. — Niet the Dark Absol, Jul 06 '20 at 16:55
Does this answer your question? [PHP: How to get all possible combinations of 1D array?](https://stackoverflow.com/questions/10834393/php-how-to-get-all-possible-combinations-of-1d-array) — hanshenrik, Jul 06 '20 at 17:01
Share your logic . [check this combination also](http://sandbox.onlinephpfunctions.com/code/c67501e8703e17b668c7b1a371a55d7164e53ae6) — Niklesh Raut, Jul 06 '20 at 17:06
That code is definitely not going to produce three lines of 4 elements like you said it does. What are you trying to do here? Why just those 4 lines/permutations? This is not at all clear. — JNevill, Jul 06 '20 at 17:08

score 1 · Accepted Answer · answered Jul 06 '20 at 17:20

You can achieve this in this way as well.

<?php

   $products = array('Volvo', 'BMW', 'Toyota', 'Kijang');
     for($i=0;$i<count($products);$i++){
        echo implode(", ",$products);  
        echo "<br>";
        array_push($products, array_shift($products));
     }

?>

This will give you the following result:

Volvo, BMW, Toyota, Kijang
BMW, Toyota, Kijang, Volvo
Toyota, Kijang, Volvo, BMW
Kijang, Volvo, BMW, Toyota

You can run the code in here.Hope this will help you.

score 0 · Answer 2 · answered Jul 06 '20 at 17:09

You can achive it in this way

<?php

$products = array('Volvo', 'BMW', 'Toyota', 'Kijang');

foreach($products as $product){
    echo "'".$product."', ";
    foreach($products as $otherProduct){
        if($otherProduct == $product){
            // Skip the element
            continue;
        }
        echo "'".$otherProduct."', ";
    }
    echo "<br>";
}

You need to loop twice to get the result.

php for loop array length

2 Answers2