在PHP中創建Rest API導致重定向錯誤

Question

我正試圖在PHP中創建適當的RESTful API。我一直在按照http://coreymaynard.com/blog/creating-a-restful-api-with-php/的步驟進行操作，而對於我來說，除了當我嘗試去http://localhost/api/v1/example時，我看起來完全一樣。我收到了內部服務器錯誤。

在Apache的錯誤日誌中我看到以下內容：

[Sat Feb 18 19:30:10.594193 2017] [core:error] [pid 10272:tid 1144] [client ::1:58203] AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace. 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3747): [client ::1:58203] AH00121: r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/api.php 
[Sat Feb 18 19:30:10.594193 2017] [core:debug] [pid 10272:tid 1144] core.c(3753): [client ::1:58203] AH00122: redirected from r->uri = /api/v1/example 

我BaseAPI類（他們所說的例子API）低於：

abstract class API 
{ 
    protected $method = ''; 
    protected $endpoint = ''; 
    protected $verb = ''; 
    protected $args = Array(); 

    public function __construct($request) 
    { 
     header("Access-Control-Allow-Origin: *"); 
     header("Access-Control-Allow-Method: *"); 
     header("Content-Type: application/json"); 

     $this->args = explode('/', rtrim($request, '/')); 
     $this->endpoint = array_shift($this->args); 
     if (array_key_exists(0, $this->args) && !is_numeric($this->args[0])) 
     { 
      $this->verb = array_shift($this->args); 
     } 

     $this->method = $_SERVER["REQUEST_METHOD"]; 
     if ($this->method === "POST" && array_key_exists('HTTP_X_HTTP_METHOD', $_SERVER)) 
     { 
      if ($_SERVER['HTTP_X_HTTP_METHOD'] === "DELETE") 
      { 
       $this->method = "DELETE"; 
      } 
      else if ($_SERVER["HTTP_X_HTTP_METHOD"] === "PUT") 
      { 
       $this->method = "PUT"; 
      } 
      else 
      { 
       throw new Exception("Unexpected header"); 
      } 
     } 

     switch ($this->method) 
     { 
      case 'DELETE': 
      case 'POST': 
       $this->request = $this->cleanInputs($_POST); 
       break; 
      case 'GET': 
       $this->request = $this->cleanInputs($_GET); 
       break; 
      case 'PUT': 
       $this->request = $this->clearInputs($_GET); 
       $this->file = file_get_contents("php://input"); 
       break; 
      default: 
       $this->response('Invalid Method', 405); 
       break; 
     } 
    } 

    public function processAPI() 
    { 
     if (method_exists($this, $this->endpoint)) 
     { 
      return $this->response($this->{$this->endpoint}($this->args)); 
     } 
     return $this->response("No Endpoint: $this->endpoint", 404); 
    } 

    private function response($data, $status = 200) 
    { 
     header("HTTP/1.1 " . $status . " " . $this->requestStatus($status)); 
     return json_encode($data); 
    } 

    private function cleanInputs($data) 
    { 
     $clean_input = Array(); 
     if (is_array($data)) 
     { 
      foreach ($data as $key => $value) 
      { 
       $clean_input[$key] = $this->cleanInputs($value); 
      } 
     } 
     else 
     { 
      $clean_input = htmlspecialchars($data); 
     } 
     return $clean_input; 
    } 

    private function requestStatus($code) 
    { 
     $status = array(
      200 => 'OK', 
      404 => 'Not Found', 
      405 => 'Method Not Allowed', 
      500 => 'Internal Server Error' 
     ); 
     return ($status[$code])?$status[$code]:$status[500]; 
    } 
} 

的MyAPI文件如下：

require_once 'BaseApi.php'; 

class MyAPI extends API 
{ 
    public function __construct($request) 
    { 
     parent::__construct($request); 
    } 

    protected function example() 
    { 
     if ($this->method === "GET") 
     { 
      return "Hello to my RESTful API"; 
     } 
     else 
     { 
      return "Only accepts GET requests"; 
     } 
    } 
} 

我api.php如下：

require_once 'MyAPI.php'; 

try 
{ 
    $api = new MyAPI($_REQUEST['request']); 
    echo $api->processAPI(); 
} 
catch (Exception $ex) 
{ 
    echo $ex->getMessage(); 
} 

我的.htaccess文件如下：

<IfModule mod_rewrite.c> 
RewriteEngine On 
RewriteCond %{REQUEST_FILENAME} !-f 
RewriteCond %{REQUEST_FILENAME} !-d 
RewriteRule api/v1/(.*)$ api/v1/api.php?request=$1 [QSA,NC,L] 
</IfModule> 

它看起來像我的一切是完全一樣的文章中，如果這有什麼差別，我使用Windows上運行WAMP服務器10.

感謝您提供任何幫助。

Answer 1

我懷疑，你的所有文件，.htaccess和*.php，在同一個基地目錄。

如果是這樣的情況下，替代api/v1/api.php將被視爲不存在的文件只是一個要求，因爲api.php是在當前目錄中，而不是在api/v1。

因此api/v1/example將被重寫到api/v1/api.php?request=example，然後重寫到api/v1/api.php?request=api.php，然後重寫到api/v1/api.php?request=api.php，等等。

---

爲了使這項工作，你必須在基本目錄和所有的PHP文件.htaccess子目錄api/v1。

---

如果你想保持這些文件在一個目錄下，重寫規則的目標必須指向現有的腳本文件api.php?request=$1，例如

RewriteCond %{REQUEST_FILENAME} !-f 
RewriteCond %{REQUEST_FILENAME} !-d 
RewriteRule api/v1/(.*)$ api.php?request=$1 [QSA,NC,L]