jquery mobile我的动作php页面没有得到输入文件

hellow my this is my form in jquery mobile i also turbed off the data-ajax and define the enctype but still i am not getting my file in my action page

<form id="form_id"  action="action/cat-manag-add.php" enctype="multipart/form-data" data-ajax="false" method="post">
<label class="TSG-font" for="category_image">Category image:</label>
<input class="required" type="file" name="file" id="file" value="" >
<form>

this my action page getting all $_POST values but not getting the $_FILES

$title=$_POST['title'];
$description=$_POST['description'];
$file=$_FILES['file'];

kindly help me

Remove value="" in input type file. And try var_dump($_FILES); check what is print in you action page