Generate Random Phone Numbers in PHP

<?php
// Generate random US phone number (xxx) xxx-xxxx
function randomUsPhoneNumber() {
    $areaCode = mt_rand(200, 999);
    $exchange = mt_rand(200, 999);
    $lineNumber = mt_rand(1000, 9999);
    return sprintf("(%03d) %03d-%04d", $areaCode, $exchange, $lineNumber);
}

// Generate random phone number with country code
function randomInternationalPhone($countryCode = "+1") {
    $areaCode = mt_rand(200, 999);
    $exchange = mt_rand(200, 999);
    $lineNumber = mt_rand(1000, 9999);
    return sprintf("%s (%03d) %03d-%04d", $countryCode, $areaCode, $exchange, $lineNumber);
}

// Generate phone number without formatting
function randomPhoneDigits($length = 10) {
    $phone = "";
    for ($i = 0; $i < $length; $i++) {
        $phone .= mt_rand(0, 9);
    }
    return $phone;
}

// Validate US phone number format
function isValidUsPhone($phone) {
    $pattern = "/^\(\d{3}\) \d{3}-\d{4}$/";
    return preg_match($pattern, $phone) === 1;
}

// Generate multiple phone numbers
function generatePhoneNumbers($count = 10) {
    $phones = [];
    for ($i = 0; $i < $count; $i++) {
        $phones[] = randomUsPhoneNumber();
    }
    return $phones;
}

// Using Faker library (composer require fakerphp/faker)
// require "vendor/autoload.php";
// $faker = Faker\Factory::create();
// $phone = $faker->phoneNumber(); // (555) 123-4567
// $phoneE164 = $faker->e164PhoneNumber(); // +15551234567

echo "US Phone: " . randomUsPhoneNumber() . "\n";
echo "International: " . randomInternationalPhone("+44") . "\n";
echo "Digits only: " . randomPhoneDigits(10) . "\n";
echo "Valid: " . (isValidUsPhone("(555) 123-4567") ? "true" : "false") . "\n";
echo "Batch: " . implode(", ", generatePhoneNumbers(3)) . "\n";
?>