Question

There's a lot of questions out there that deals between arrays and multi-dimensional arrays but only one so how about two then? Let's say this is the data:

Array
(
[0] => Array
    (
        [BRANCHCODE] => 2
        [BRANCH] => BRANCH 1
        [AGREEID] => 1
    )

[1] => Array
    (
        [BRANCHCODE] => 2
        [BRANCH] => BRANCH 2
        [AGREEID] => 2
    )

[2] => Array
    (
        [BRANCHCODE] => 2
        [BRANCH] => BRANCH 3
        [AGREEID] => 3
    )
)

Array
(
[0] => Array
    (
        [BRANCHCODE] => 2
        [BRANCH] => BRANCH 4
        [AGREEID] => 1
    )

[1] => Array
    (
        [BRANCHCODE] => 2
        [BRANCH] => BRANCH 5
        [AGREEID] => 4
    )

[2] => Array
    (
        [BRANCHCODE] => 2
        [BRANCH] => BRANCH 6
        [AGREEID] => 5
    )
)

I managed to get the duplicated data but I can't get the unique data. Here's the php code on how I got the duplicates and also the count of the duplicated data.

In here I loop through both of the two arrays the first one is the array of the uploaded data and the next loop is the database results. I compared the two arrays if the AGREEID in the uploaded data has duplicate in the database. If the AGREEID in the uploaded data is unique I will insert it in the database.

foreach ($result as $key=>$upload_data) {
        $agreeid_upload = $result[$key]['AGREEID'];
        $data = $result[$key];
        $another_data = $result[$key];

        foreach ($reports as $dbase_data) {
            $agreeid = $dbase_data->AGREEID;
            if($agreeid_upload == $agreeid){ /// record has duplicate in the database
                $count_duplicates = $count_duplicates + 1;
                $duplicates[$key] = $data;
            }else{
                ///here i want to store into another array the unique data.. 
            }
        }
    }

Answer 1

The method used would work, but is going to be inefficient with a large amount of data because it will do a lot of extra looping.

$dbAgreeeData = array();
$duplicates = array();
$unique = array();
foreach ($reports as $dbase_data) {
    $dbAgreeeData[$db_dbase_data->AGREEID] = $dbase_data;
}

foreach ($result as $key=>$upload_data) {
    $agreeId = $upload_data['AGREEID'];
    if (isset($dbAgreeeData[$agreeId)){
        $duplicates[$agreeId] = $upload_data;
    }
    else {
        $unique[$agreeId] = $upload_data;
    }
}
$numDuplicate = count($duplicates);
$numUnique = count($unique);

Or

$dbAgreeeData = array();
$uploadData= array();

foreach ($reports as $dbase_data) {
    $dbAgreeeData[$db_dbase_data->AGREEID] = $dbase_data;
}
foreach ($result as $key=>$upload_data) {
    $uploadData[$upload_data['AGREEID']] = $upload_data;
}

$duplicates = array_intersect_key($dbAgreeData, $uploadData;
$unique = array($dbAgreeData, $uploadData);
$numDuplicate = count($duplicates);
$numUnique = count($unique);

Get duplicate and unique data between two multi-dimensional arrays

1 个答案: