How remove and reindex arrays duplicate by comparing multiple values in php?

Question

How remove and reindex arrays duplicate by comparing spécific values source and target?

Sample array to process:

Array
(
    [links] => Array
        (
            [0] => Array
                (
                    [source] => galaxy
                    [target] => s7
                    [value] => 1
                )
            [1] => Array
                (
                    [source] => galaxy
                    [target] => s7
                    [value] => 1
                )           
            [2] => Array
                (
                    [source] => s7
                    [target] => galaxy
                    [value] => 1
                )
            [3] => Array
                (
                    [source] => galaxy
                    [target] => s8
                    [value] => 1
                )
        )
)

Desired result:

Array
(
    [links] => Array
        (
            [0] => Array
                (
                    [source] => galaxy
                    [target] => s7
                    [value] => 1
                )
            [1] => Array
                (
                    [source] => s7
                    [target] => galaxy
                    [value] => 1
                )               
            [2] => Array
                (
                    [source] => galaxy
                    [target] => s8
                    [value] => 1
                )
        )
)

Thank's

Possible duplicate of How to remove duplicate values from a multi-dimensional array in PHP — ficuscr
– ficuscr, Commented Jul 20, 2018 at 18:25
@ficuscr please, take the time to read the question carefully, cordially. — Mary
– Mary, Commented Jul 20, 2018 at 18:31
I almost feel like this is rhetorical anyway... stackoverflow.com/questions/591094/… — ficuscr
– ficuscr, Commented Jul 20, 2018 at 18:57
@ficuscr it's not the same question because the need is different. Please, stay friendly. cordiality — Mary
– Mary, Commented Jul 20, 2018 at 19:09
When you say "comparing specific values source and target" does that mean that the value key may have different values for the same source and target? If that's the case, which value should be kept? And if that's not the case, can you explain a bit more how this is different than the suggested duplicate? — Don't Panic
– Don't Panic, Commented Jul 20, 2018 at 19:21

ficuscr · Accepted Answer · 2018-07-20 19:33:15Z

2

Are you saying the linked answer does not work because of the "reindex" aspect? I did read carefully I thought. Since you shared no code maybe elaborate a bit if I am still missing something?

Here:

 <?php
 $foo = [
   ['source' => 'g', 'target' => 's7'],
   ['source' => 'g', 'target' => 's7'],
   ['source' => 's7', 'target' => 'g'],
   ['source' => 'g', 'target' => 's8']
];

var_dump(array_values(array_unique($foo, SORT_REGULAR)));

array(3) {
  [0]=>
  array(2) {
    ["source"]=>
    string(1) "g"
    ["target"]=>
    string(2) "s7"
  }
  [1]=>
  array(2) {
    ["source"]=>
    string(2) "s7"
    ["target"]=>
    string(1) "g"
  }
  [2]=>
  array(2) {
    ["source"]=>
    string(1) "g"
    ["target"]=>
    string(2) "s8"
  }
}

edited Jul 20, 2018 at 19:33

answered Jul 20, 2018 at 18:38

ficuscr

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1 Comment

Don't Panic Over a year ago

Same here, looks reasonable to me. Too many question marks maybe? ;)

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