如何在Laravel中获取服务器IP？

---

服务器IP地址就是您连接到的服务器的IP地址。当您使用Laravel获取服务器IP时，您可以使用`$_SERVER['SERVER_ADDR']`。

`$_SERVER`变量在PHP中充当全局变量。它包含诸如标头信息、脚本位置和其他杂项详细信息等内容。

示例1

以下示例检索`$_SERVER`全局变量的详细信息。

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
class StudentController extends Controller {
   public function index() {
      print_r($_SERVER);
   }
}

输出

执行此操作将生成以下输出：

Array (
   [DOCUMENT_ROOT] => C:\xampp\htdocs\laraveltest\public
   [REMOTE_ADDR] => 127.0.0.1
   [REMOTE_PORT] => 61705
   [SERVER_SOFTWARE] => PHP 7.3.33 Development Server
   [SERVER_PROTOCOL] => HTTP/1.1
   [SERVER_ADDR] => 127.0.0.1
   [SERVER_NAME] => 127.0.0.1
   [SERVER_PORT] => 8000
   [REQUEST_URI] => /test
   [REQUEST_METHOD] => GET
   [SCRIPT_NAME] => /index.php
   [SCRIPT_FILENAME] => C:\xampp\htdocs\laraveltest\public\index.php
   [PATH_INFO] => /test
   [PHP_SELF] => /index.php/test
   [HTTP_HOST] => 127.0.0.1:8000
   [HTTP_CONNECTION] => keep-alive
   [HTTP_CACHE_CONTROL] => max-age=0
   [HTTP_SEC_CH_UA] => " Not A;Brand";v="99", "Chromium";v="102", "Google Chrome";v="102"
   [HTTP_SEC_CH_UA_MOBILE] => ?0
   [HTTP_SEC_CH_UA_PLATFORM] => "Windows"
   [HTTP_UPGRADE_INSECURE_REQUESTS] => 1
   [HTTP_USER_AGENT] => Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.61 Safari/537.36
   [HTTP_ACCEPT] => text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
   [HTTP_SEC_FETCH_SITE] => none
   [HTTP_SEC_FETCH_MODE] => navigate
   [HTTP_SEC_FETCH_USER] => ?1
   [HTTP_SEC_FETCH_DEST] => document
   [HTTP_ACCEPT_ENCODING] => gzip, deflate, br
   [HTTP_ACCEPT_LANGUAGE] => en-US,en;q=0.9
   [HTTP_COOKIE] => XSRF-TOKEN=eyJpdiI6IlJCKzMwdE9FeGhnck1ycllPOHh2RGc9PSIsInZhbHVlIjoiUUw0cWdGeHlXeStSY3pQcWFGTmI5YnpaaDdpanFYSW1lUkNzNUxNTDdnUk5BT0ZjdHVqK1YxM256aUN4Z0hJTGdObytoYUlKTjVpZ0ttU3pEbGlxdXd0Z3JsMDA2bGF3YnBRTUoxb0FUVklRekVmMHNVRmk4TUFwbG4vMzlNMU4iLCJtYWMiOiI5MmZmYTkxYzhiOWFmNTdkNTJiZjQyZmFhYWQyZTgyMTM2M2NmNGFkNzdkNjA0NTY3M2QwYTk2OTI1NzE4OTlkIiwidGFnIjoiIn0%3D; laravel_session=eyJpdiI6IlZGcmxOZ0xUcnF1bUh2K2pqV1hraWc9PSIsInZhbHVlIjoiSCtqbFErN0lxUksyNzBFZkxZa3p1Q3RHRzZVVDcrd1JZRDJsaEh6eW5RNWFJUS85NzFtb21ray95bXZuZDY4dU52TWxUUVJacURCTy9ERjV2VTBiS2FFdFFsQ2MrclFkejBPaG5lNDlyNGV5M253R2o2UGZJRmxmRjgrVmV5NFIiLCJtYWMiOiJlMGU3ZWY5YTUxZjY3ZjEzNzc0MzViMTUwYTgxYmJmNjY4N2I2NmM3NjJjNzkwMGEyZDhlNmYxY2EwMDkxYjE4IiwidGFnIjoiIn0%3D
   [REQUEST_TIME_FLOAT] => 1653728150.9227
   [REQUEST_TIME] => 1653728150
)

`$_SERVER`全局变量的输出包含SERVER_NAME、SERVER_ADDR、SERVER_PORT等。

示例2

以下是如何使用`$_SERVER['SERVER_ADDR']`获取服务器IP的示例：

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Collection;
class UserController extends Controller {
   public function index() {
      echo $_SERVER['SERVER_ADDR'];
   }
}

输出

127.0.0.1

使用SERVER_ADDR

除了使用全局`$_SERVER`变量外，Laravel还提供了一个request()对象，它可以使用SERVER_ADDR作为键来返回服务器IP。您还可以使用ip()方法和request()，如下例所示。

示例1

以下示例将值SERVER_ADDR传递给request()->server()方法。

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
class UserController extends Controller {
   public function index() {
      echo request()->server('SERVER_ADDR');
   }
}

输出

127.0.0.1

示例2

以下示例尝试使用request()->ip()方法检索IP地址。

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\Student;

//use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Collection;

class StudentController extends Controller {
   public function index() {
      echo request()->ip();
   }
}

输出

以上代码的输出是：

127.0.0.1