Why does "<input id='id' type=text name='id' value='H123'>" not get "POST"ed by FormData -

when submit following form

<form name="fileupload" id="fileupload" method="post" action="javascript:void(0);" enctype="multipart/form-data">    <input id='id' type=text name='id' value='h123'> <div class="file_browser"> <input type="file" name="multiple_files[]" id="_multiple_files" class="hide_broswe" multiple /> </div> <div class="file_upload">    <input type="submit" value="upload" class="upload_button" /> </div> </form> 

the files[] uploaded ok input "#id" not in $_post array.

i need because want pass name of directory images stored in.

i notice missing quotation marks around 'text' in

   <input id='id' type=text name='id' value='h123'> 

which should be:

   <input id='id' type='text' name='id' value='h123'> 

besides can't see obvious reason why shouldn't work.