Symfony2將上傳的文件分配給內存

Question

在Symfony中上傳大於post_max_size的文件時，上傳的文件被分配到內存中。

Fatal error: Allowed memory size of 150994944 bytes exhausted (tried to allocate 84627994 bytes) in /Applications/MAMP/htdocs/Symfony/vendor/symfony/src/Symfony/Component/HttpKernel/DataCollector/DataCollector.php on line 28

爲什麼symfony中試圖分配一個文件上POST內存？

1/php.ini中

file_uploads = On 
upload_tmp_dir = /Applications/MAMP/tmp/php 
upload_max_filesize = 32M 
post_max_size = 48M 

2 /控制器

<?php 
//AcmeDemoBundle/Controller/DemoController 
namespace Acme\DemoBundle\Controller; 
use Symfony\Component\HttpFoundation\Request; 

class DemoController extends Controller 
{ 

public function createAction(Request $request) 
{ 

    if ($request->getMethod() == 'POST') 
    { 
     if ($_FILES["file"]["size"] < 3000000)//3Mb 
     { 
      if ($_FILES["file"]["error"] > 0) 
      { 
       echo "Return Code: " . $_FILES["file"]["error"] . "<br />"; 
      } 
      else 
      { 
       if (empty($_POST) && empty($_FILES) && isset($_SERVER['REQUEST_METHOD']) && strtolower($_SERVER['REQUEST_METHOD']) == 'post') 
       { 
        echo "The file is bigger than post_max_size in php.ini."; 
       } 
       else 
       { 
        echo "Size: " . ($_FILES["file"]["size"]/1024) . " Kb<br />"; 

        if (file_exists("upload/" . $_FILES["file"]["name"])) 
        { 
         echo $_FILES["file"]["name"] . " already exists. "; 
        } 
        else 
        { 
         move_uploaded_file($_FILES["file"]["tmp_name"], 
          "upload/" . $_FILES["file"]["name"]); 
         echo "Stored in: " . "upload/" . $_FILES["file"]["name"]; 
        } 
       } 
      } 
     } 
     else 
     { 
      echo "Invalid file"; 
     } 

    } 

    return $this->container->get('templating')->renderResponse('AcmeDemoBundle:Demo:create.html.twig'); 

} 

3 /模板

//AcmeDemoBundle/Resources/views/Demo/create.html.twig 
{% extends "AcmeDemoBundle::layout.html.twig" %} 

{% block content %} 

<h1>Upload File</h1> 

<form action="#" method="post" 
     enctype="multipart/form-data"> 
    <label name="file">Filename:</label> 
    <input type="file" name="file" id="file" /> 
    <br /> 
    <input type="submit" name="submit" value="Submit" /> 
</form> 

{% endblock %} 

Answer 1

我假設你正在通過app_dev.php前端控制器嘗試symfony。

默認情況下，在開發環境中，爲每個請求啓用分析器。

framework: 
    profiler: { only_exceptions: false } 

只需將only_exceptions參數從false更改爲true，然後重試。

框架： 探查：{only_exceptions：真正}

您應該使用該框架爲您提供處理文件上傳的工具。

操作：

public function createAction(Request $request) 
{ 
    $form = $this->createFormBuilder() 
     ->add('attachment', 'file') 
     ->getForm(); 

    if ($request->getMethod() == 'POST') { 
     $form->bindRequest($request); 

     if ($form->isValid()) { 
      $file = $form['attachment']->getData(); /** @var $file \Symfony\Component\HttpFoundation\File\UploadedFile */ 

      echo $file->getClientSize(); 
     } 
    } 

    return $this->render('AcmeDemoBundle:Demo:create.html.twig', array(
     'form' => $form->createView(), 
    )); 
} 

模板：

{% extends "AcmeDemoBundle::layout.html.twig" %} 

{% block content %} 

<h1>Upload File</h1> 

<form action="" method="post" {{ form_enctype(form) }}> 
    {{ form_errors(form) }} 

    {{ form_row(form.attachment) }} 

    {{ form_rest(form) }} 

    <input type="submit" /> 
</form> 

{% endblock %} 

有了這個代碼，PHP不會超過內存使用情況。如果文件太大，表單會顯示錯誤，並且「if（$ form-> isValid（））」中的代碼不會執行。

看一看形式的文檔：http://symfony.com/doc/current/book/forms.html 和「文件」字段類型參考：http://symfony.com/doc/current/reference/forms/types/file.html