PHP生成随机英文用户名

最近用wordpress来做英文的博客，需要虚构一些随机的英文用户名来冒充访客发表评论，因为对PHP不熟悉（压根没学过），只能在百度和google查找方法。办法有3个:

1、随机字母数字组合法

这个方法的思路：26个字母大小写 +10个数字(0~9) 随机组合成6到10个的字符串最为用户名，代码如下：

function random_user($len = 8)
{
    $user = '';
    $lchar = 0;
    $char = 0;
    for($i = 0; $i < $len; $i++)
    {
        while($char == $lchar)
       {
            $char = rand(48, 109);
            if($char > 57) $char += 7;
            if($char > 90) $char += 6;
        }
       $user .= chr($char);
       $lchar = $char;
    }
return $user;
}

调用方法(默认生成8个字符串)：

<?php echo random_user();?>

生产的英文用户名如下：

缺点很明显：不靠谱，可读性差，一看就知道是代码生成的。

2、调用现成的API

这个思路也很简单，直接调用可以生成用户数据的API，当然前提是要有这种API才行。我google一下，还真给我找着了：

https://randomuser.me/api/

以json格式直接返回一个用户的各种信息，包括：姓名，性格，年龄，城市，邮箱，头像等等…. 。下面是返回的数据：

{"results":[
    {
     "gender":"female",
     "name":{
        "title":"miss",
        "first":"frida",
        "last":"christiansen"
      },
     "location":{
        "street":"2087 oddenvej",
        "city":"ulsted, hals",
        "state":"danmark",
        "postcode":33076
      },
     "email":"frida.christiansen@example.com",
     "login":{
        "username":"brownostrich869",
        "password":"blacks",
        "salt":"hnroL361",
        "md5":"e77b5d194fa24307d94166fdb073489a",
        "sha1":"1f7c5119845d31071035ba786cfd1829ca4188de",
        "sha256":"37e202da9ee700e3b21a1260de0f2697f2a75357cacd6124e73eee39b21c0f05"
     },
     "dob":"1977-04-27 18:44:16",
     "registered":"2014-12-11 11:11:29",
     "phone":"97377508",
     "cell":"04206356",
     "id":{
        "name":"CPR",
        "value":"018563-3343"
     },
     "picture":{
        "large":"https://randomuser.me/api/portraits/women/58.jpg",
        "medium":"https://randomuser.me/api/portraits/med/women/58.jpg",
        "thumbnail":"https://randomuser.me/api/portraits/thumb/women/58.jpg"
     },
    "nat":"DK"
    }
  ],
  "info":{
    "seed":"9c5a7af03b97edcf",
    "results":1,
    "page":1,
    "version":"1.1"
  }
}

使用说明文档：

https://randomuser.me/documentation

如果使用python调用和处理这个API是没有问题的，但是对于php我就毫无头绪了，只能放弃这个方法。

3、字典随机组合法

方法思路：找出外国人最常用的姓（Most Common Surnames），最常用的名（Most Common Male Names，Most Common Female Names），再随机组合成一个常用的英文用户名。

function random_user()
{
$male_names = array("James","John","Robert","Michael","William","David","Richard","Charles","Joseph","Thomas","Christopher","Daniel","Paul","Mark","Donald","George","Kenneth","Steven","Edward");
$famale_names = array("Mary","Patricia","Linda","Barbara","Elizabeth","Jennifer","Maria","Susan","Margaret","Dorothy","Lisa","Nancy","Karen","Betty","Helen","Sandra","Donna","Carol","Ruth");
$surnames = array("Smith","Jones","Taylor","Williams","Brown","Davies","Evans","Wilson","Thomas","Roberts","Johnson","Lewis","Walker","Robinson","Wood","Thompson","White","Watson","Jackson");
$frist_num = mt_rand(0,19);
$sur_num = mt_rand(0,19);
$type = rand(0,1);
if($type==0){
    $username=$male_names[$frist_num]." ".$surnames[$sur_num];
} else {
    $username=$famale_names[$frist_num]." ".$surnames[$sur_num];
}
return $username;
}

这里使用了20个常用男性名，20常用个女性名，20个常用的姓来组合用户名，如果需要更多的数据可以看看这里：外国人最常用的100个姓，最常用的100个名。

调用的方法和上面是一样的，生成的英文用户名如下：

可以看出这个方法生成的英文用户名很靠谱，可读性高，而且可生成数量众多（20*20+20*20 共800个）。最后我也是使用了这个函数。