Compare element in array and loop through each php

Question

I want to compare a value of data to a list of element which I had retrieved from php array(decoded json).

First,

This is the first array:

Array1
(
[0] => Array
    (
        [member_id] => 3
        [member_card_num] => 2013011192330791
        [member_barcode] => 2300067628912
    )

[1] => Array
    (
        [member_id] => 4
        [member_card_num] => 2328482492740000
        [member_barcode] => 3545637000
    )

[2] => Array
    (
        [member_id] => 2
        [member_card_num] => 40001974318
        [member_barcode] => 486126
    )

[3] => Array
    (
        [member_id] => 1
        [member_card_num] => 91001310000057698
        [member_barcode] => 000057698
    )

)

This is the second Array:

Array2
(

[0] => Array
    (
        [member_id] => 2
        [member_card_num] => 40001974318
        [member_barcode] => 486126
    )

)

Second,

I had retrieved the (member_barcode) which I required.

Here is the code:

For Array1:

 foreach ($decode1 as $d){

        $merchant_barcode = $d ['member_barcode']; 
        echo  $merchant_barcode;

     }  

For Array2:

 foreach ($decode2 as $d2){
      $user_barcode = $d2 ['member_barcode'];
      echo $user_barcode;
     }

Then, I get this output():

For Array1(merchant_barcode):

2300067628912
3545637000
486126
000057698

For Array2(user_barcode):

486126

The question is, I would to check and compare whether the user_barcode in Array2(486126) is exist/match to one of the merchant_barcode in Array1.

This is my code, but it only compare the user_barcode in Array2 to the last element(000057698) in Array1,

I want it to loop through each n check one by one. How can I do that?

public function actionCompareBarcode($user_barcode, $merchant_barcode){

      if(($user_barcode) == ($merchant_barcode)){
            echo "barcode exist. ";

        }

     else{

         echo "barcode not exist";
     }
  }

In this case, the output I get is "barcode not exist", but it should be "barcode exist". Anyone can help? Appreciate that. Im kinda new to php.

Answer 1

You could use a nested loop like:

foreach ($decode2 as $d2)
{
      $user_barcode = $d2 ['member_barcode'];
      foreach ($decode1 as $d)
      {
        $merchant_barcode = $d ['member_barcode']; 
        if ($merchant_barcode == $user_barcode)
        {
            echo "Match found!";
        }
        else
        {
            echo "No match found!";
        }
    }
}

Answer 2

<?

$a = array(
        array(
                'member_id' => 3,
                'member_card_num' => '2013011192330791',
                'member_barcode' => '2300067628912',
        ),
        array(
                'member_id' => 4,
                'member_card_num' => '2328482492740000',
                'member_barcode' => '3545637000',
        ),
        array(
                'member_id' => 2,
                'member_card_num' => '40001974318',
                'member_barcode' => '486126',
        ),
        array(
                'member_id' => 1,
                'member_card_num' => '91001310000057698',
                'member_barcode' => '000057698',
        )
);

$b = array(
        array(
                'member_id' => 2,
                'member_card_num' => '40001974318',
                'member_barcode' => '486126',
        )
);


array_walk($a, function($item) use($b) {
    echo ($b['0']['member_barcode'] == $item['member_barcode'] ? "found" : NULL);
});

?>

Answer 3

I'd use array_uintersect() to calculate if those multidimensional arrays have a common element:

<?php
$a = array(
  array(
    'member_id' => '3',
    'member_card_num' => '2013011192330791',
    'member_barcode' => '2300067628912',
  ),
  array(
    'member_id' => '2',
    'member_card_num' => '40001974318',
    'member_barcode' => '486126',
  )
);

$b = array(
  array(
    'member_id' => '2',
    'member_card_num' => '40001974318',
    'member_barcode' => '486126',
  )
);

$match = array_uintersect($a, $b, function($valueA, $valueB) {
    return strcasecmp($valueA['member_barcode'], $valueB['member_barcode']);
});

print_r($match);

Answer 4

在循环遍历Array1并将user_barcode与每个值进行比较时，尝试调用该方法

Answer 5

You can compare two array this way too:

$per_arr = array();
$permissions = array()
foreach ($per_arr as $key => $perms) {
    if(isset($permissions[$key]['name'])){
        echo  $per_arr[$key]['name']; //matched data
    }else{
        echo $per_arr[$key]['name']; //not matched data
    }
}