php - No POST parameters when upload file -

I am creating an upload file form, but a very weird bug appears ... when I upload the file, Symphony does not see. Post Standards

My Form Class:

  Class UploadDocumentForm Extends {AbstractType {Public Function buildForm (FormBuilderInterface $ Builder, Array $ option) $ builder- & gt; Add ('name', 'text', array ('label' => gt; 'name')); $ Manufacturer- & gt; Add ('file', 'file', array ('label' = & gt; 'fichier')); } Public function getName () {return 'upload_document_form'; }}   
 My templates:  
  & lt; Form action = "{{path ('upload_file')}}" enctype = "multiparty / form data" method = "post" & gt; {{Form_widget (upload_file_form)}} & lt; Input type = "submit" value = "environment le earther" /> & Lt; / Form & gt;   
 My Controller Action Method:  
  Public Function uploadAction (request $ request) {$ form = $ this- & gt; CreateForm (new UploadDocumentForm (), new document ()); $ Form & gt; Tie ($ request); If ($ form-> isValid ()) {[...]} [...]}   
 My request (debug with firebug):  < Pre>  upload_document_form [name] blablabla upload_document_form [file] ID3��½ ¿½TRCK��½3/12TIT2 [...] upload_document_form [_token] bb5f9925002dafbab [.. .]   
 My request in the Symphony debug toolbar:  
 
 Request Post Parameter  
 No Post Standards   
 If I do one:  
  dead (var_dump ($ request-> get ($ form-> getName ())));   
 $ request return null  
 I have configured php.ini of my /etc/php5/apache/php.ini:  
 
  
 upload_max_filesize = 100M  
 max_file_uploads = 28   
 So, naturally, my form is not valid. The most odd is that if I upload a small file (under ~ 4mo), the post data is here, and all the work is fine!   
 
BlogThis!