Vietnam mobile phone classify

vietnam-mobile-phone-classify.php

<?php

$phones = [
    "0987654321",
    "0912345678",
    "01234567890",
    "01650930293",
    "0992938392",
    "01882938493",
    "0902938292",
    "01999382738",
    "01202938493",
    "0929483920",
    "0999292399",
    "0939382738",
    "0943829304",
    "01279493828",
];

$operatorRegEx = [
    'Viettel' => '(09[6-8]|016[2-9])',
    'Vinaphone' => '(09(1|4)|012([2-5]|7|9))',
    'Mobifone' => '(09(0|3)|012([0-2]|6|8))',
    'Vietnam Mobile' => '(092|018(6|8))',
    'Gmobile' => '(0(9|1)9{1,2})',
];

foreach ($operatorRegEx as $operator => $regEx) {
    $phoneList[$operator] = preg_grep('/^' . $regEx . '[0-9]+$/', $phones);
}

echo "<pre>";
var_dump($phoneList);
echo "</pre>";