PHP multi dimensional Array removing partial duplicates

Question

I have an array containing this

Array ( 
[0] => Array ( [0] => Sub1 ) 
[1] => Array ( [0] => Sub1 [1] => Gold ) 
[2] => Array ( [0] => Sub1 [1] => Sub2 ) 
[3] => Array ( [0] => Sub1 [1] => Sub2 [2] => Sub3 ) 
[4] => Array ( [0] => Sub1 [1] => Sub2 [2] => Sub3 [3] => Sub4 ) 
[5] => Array ( [0] => Sub1 [1] => Test ) 
)

How can i remove the array [2] [3] as they are existent in [4]

and the array would be like

Array (  
[0] => Array ( [0] => Sub1 [1] => Gold )  
[1] => Array ( [0] => Sub1 [1] => Sub2 [2] => Sub3 [3] => Sub4 ) 
[2] => Array ( [0] => Sub1 [1] => Test ) 
)

Is it possible to automate?

use array_intersect php.net/manual/en/function.array-intersect.php function — Alex
– Alex, Commented Apr 19, 2014 at 15:34
@Alex - From what I can see of array intersect it return only the values existing in multiple arrays, I want the opposite of that. to remove the repeated values, that already exist in the array. Imagine it like a path or a url string like for example Sub1/Sub2 Sub1/Sub2/Sub3 and Sub1/Sub2/Sub3/Sub4 — flynn
– flynn, Commented Apr 19, 2014 at 15:44

Barmar · Accepted Answer · 2014-04-19 15:43:27Z

2

$result = array();
foreach ($original as $orig_el) {
    $found = false;
    foreach ($result as &$new_el) {
        if (count($orig_el) >= count($new_el) && array_slice($orig_el, 0, count($new_el)) == $new_el) {
            $new_el = $orig_el;
            $found = true;
            break;
        }
    }
    if (!$found) {
        $result[] = $orig_el;
    }
}

answered Apr 19, 2014 at 15:43

Barmar

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3 Comments

flynn Over a year ago

The array stays the same after going through the code you gave here, I tried it and it outputs the same structure as the input.

Barmar Over a year ago

Can you make a demo at IDEone.com?

flynn Over a year ago

Made the example, and it's working, I had a typo, Thank you so much! here is the example btw link

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