随机手机号码

/**
 * 随机生成以手机号码为邮箱的用户名
 * @return string
 */
function nextMobile()
{
    $mobileSegment = array(
        '134', '135', '136', '137', '138', '139', '150', '151', '152', '157', '130', '131', '132', '155', '186', '133', '153', '189',
    );

    $prefix = $mobileSegment[array_rand($mobileSegment)];
    $middle = mt_rand(2000, 9000);
    $suffix = mt_rand(2000, 9000);

    return $prefix . $middle . $suffix . '@phone';
}