Find Duplicate Multidimensional Array and remove from array php

Question

How to remove multi dimensional array if duplicate. In this example Barcode is duplicate value of 111 i want to remove this if found duplicate. PLease help Im new to php. Thanks

Output:

 Array 
(
[0] => Array
    (
        [Barcode] => 111
        [Transaction_No] => 256
    )

[1] => Array
    (
        [Barcode] => 111
        [Transaction_No] => 0
    )

[2] => Array
    (
        [Barcode] => 222
        [Transaction_No] => 0
    )

)

Expected Output:

 Array 
(
[0] => Array
    (
        [Barcode] => 222
        [Transaction_No] => 0
    )

)

What I want is to remove this array 2 array. Actually its dynamic meaning when found barcode duplicate remove all duplicate — coolshox
– coolshox, Commented Jul 22, 2016 at 5:41
Yes Correct Nikhil Vaghla. if all are the same then remove all — coolshox
– coolshox, Commented Jul 22, 2016 at 5:45

ebildude123 · Accepted Answer · 2016-07-22 06:04:55Z

This keeps track of the keys of each barcode array item to find duplicates, then uses array_values at the end to fix the array indexing.

<?php
$myArray = array(
    array
    (
        "Barcode" => 111,
        "Transaction_No" => 256
    ),
    array
    (
        "Barcode" => 111,
        "Transaction_No" => 0
    ),
    array
    (
        "Barcode" => 222,
        "Transaction_No" => 0
    )
);

$barcodeKeys = array();
foreach ($myArray as $key => $arr) {
    $code = $arr["Barcode"];
    if (!isset($barcodeKeys[$code])) {
        $barcodeKeys[$code] = array();
    }

    $barcodeKeys[$code][] = $key;

    if (count($barcodeKeys[$code]) > 1) {
        foreach ($barcodeKeys[$code] as $dupKey) {
            if (isset($myArray[$dupKey])) {
                unset($myArray[$dupKey]);
            }
        }
    }
}

$myArray = array_values($myArray);
print_r($myArray);

Output

Array
(
    [0] => Array
        (
            [Barcode] => 222
            [Transaction_No] => 0
        )

)

Woah! Thanks ebildude123 expected output correct. Thanks a lot you save my day! Thanks

xAqweRx · Accepted Answer · 2016-07-22 06:05:27Z

1

Fast approach to your question:

<?php
$barcodes =  array(array( 'Barcode' => 111,'Transaction_No' => 256),array('Barcode' => 111,'Transaction_No' => 0),array('Barcode' => 222,'Transaction_No' => 0),array('Barcode' => 333,'Transaction_No' => 0)); 
$result = array();
$exist = array();
foreach($barcodes as $key => $item){
    if( in_array( $item['Barcode'], array_values( $exixt ) ){
         unset( $result[ array_search ( $item['Barcode'], $exist ) ] );
    } else {
        $result[ $key ] = array('Barcode' => $item['Barcode'],'Transaction_No' => $item['Transaction_No'] );
        $exist[ $item['Barcode'] ] = $key;
    }
}

var_dump($result);

edited Jul 22, 2016 at 6:05

answered Jul 22, 2016 at 5:48

xAqweRx

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2 Comments

coolshox Over a year ago

Where did you get the $barcode variable? it does not work

coolshox Over a year ago

Hi xAqweRx thanks for the code. ebildude123 code is much near to my expectation. Anyway thanks for suggestion

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