array_diff with calculation

Question

Please, consider the following arrays:

$reference = array(
    '080604' => 4,
    '080703' => 4,
    '080734' => 2,
    '080819' => 2,
    '088341' => 2,
    '805238' => 20,
    '805283' => 4,
    '805290' => 2,
    '805849' => 2,
    '806051' => 2,
    '806068' => 2,
);

$test = array(
    '080604' => 2,
    '080703' => 4,
    '080819' => 1,
    '088341' => 2,
    '805238' => 20,
    '805283' => 4,
    '805290' => 2,
    '805849' => 2,
    '806051' => 2,
    '806068' => 2,
);

They are quite similar, but can have some various differences, e.g. it's possible that: - some keys of $reference are not present in $test at all - some keys of $test are not present in $reference at all - all keys are present, but the values in $reference and $test are different (sometimes $reference value is bigger than $test and sometimes the value of $test is bigger than $reference)

I need to find out the differences automatically and to output them in a way, that not only the difference in count itself, but also a description is provided, e.g.

$result = [
   '080604' => [
       'reference' => 4,
       'test' => 2
   ]
];

If some value is in only one of the lists:

$result = [
   '1234567890' => [
       'reference' => 0,
       'test' => 2
   ]
];

or something like that.

Does someone have an idea, which is the best way to accomplish this in an elegant way? Thank you very much!

MatsLindh · Accepted Answer · 2020-04-11 21:22:56Z

1

Iterate over each and populate the array with values if present:

$combined = [];

foreach ($reference as $key => $val) {
    $combined[$key] = [
        'test' => 0,
        'reference' => $val,
    ];
}

foreach ($test as $key => $val) {
    if (!isset($combined[$key])) {
        $combined[$key] = [
            'reference' => 0,
            'test' => 0,
        ]
    }

    $combined[$key]['test'] = $val;
}

$combined will contain both values from both arrays with reference to both the elements from $reference and $test.

answered Apr 11, 2020 at 21:22

MatsLindh

53.5k5 gold badges70 silver badges97 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Antonio Abrantes · Accepted Answer · 2020-04-11 21:26:46Z

0

try

$result = array_diff($reference, $test);
print_r($result)

answered Apr 11, 2020 at 21:26

Antonio Abrantes

5815 silver badges9 bronze badges

1 Comment

Mark Rotteveel Over a year ago

Please don't post only code as an answer, but also provide an explanation what your code does and how it solves the problem of the question. Answers with an explanation are usually of higher quality, and are more like to attract upvotes.

Collectives™ on Stack Overflow

array_diff with calculation

2 Answers 2

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related