PHP: Check if array contains part of a value-CodePudding

I have 2 arrays:

$array_a = array(
    array(
      "id" => 1,
      "merchant_reference" => "Ref 12345"
    ),
    array(
      "id" => 2,
      "merchant_reference" => "Ref 67890"
    ),
    array(
      "id" => 3,
      "merchant_reference" => "Ref 11122"
    )
  );

  $array_b = array(
    array(
      "id" => 1,
      "merchant_reference" => "12345"
    ),
    array(
      "id" => 2,
      "merchant_reference" => "67890"
    ),
    array(
      "id" => 3,
      "merchant_reference" => "11122"
    )
  );

And, I'm trying to find 12345 in '$array_b' since Ref 12345 in '$array_a' contains '12345'.

I tried:

  $matches = array_filter($array_b, fn($item) => false !== strpos($item['merchant_reference'], $array_a[0]["merchant_reference"]));
  if (!!$matches!== false) {   
      echo "Exists";
  } else {
      echo "Does not exist";
  }

But, this does not work since I'm searching for more characters than are in '$array_b'

CodePudding user response：

You are searching the complete text including the "Ref ". Use a regex for extracting the number.

$matches = [];
preg_match('/Ref (\d )/', $array_a[0]['merchant_reference'], $matches);
$searchRefNumber = $matches[1];

$matches = array_filter($array_b, fn($item) => $searchRefNumber === $item['merchant_reference']);

echo $matches ? 'Exists' : 'Does not exist';

prints

Exists