Image upload functionality is working fine using HTML, Javascript and PHP. But now I am trying to convert it into HTML, JQuery and PHP but I am not able to upload photo using below code.
I am not able to get file type variable on .js page and then file itself on php page (upload_p.php)
Please advise what I am doing wrong. I am trying to get this work for last 2 days but no luck yet.
upload.php
<form name="Uform" id="Uform" novalidate>
<div class="control-group form-group">
    <input type="file" name="img" id="img">
    <div id="success"></div>
    <button type="submit" class="btn btn-primary">Upload</button>
</div>
</form>
upload.js
$(function() {
$("#UForm file").jqBootstrapValidation({
    preventSubmit: true,
    submitSuccess: function($form, event) {
        event.preventDefault(); 
        // Try #1
        var form   = new FormData() ;
        var file = $('#img')[0].files[0];
        formData.append("file", file);
        // Try #2
        var FileData = $('#img').prop('files')[0];   
        var form_data = new FormData();                  
        form_data.append('file', FileData);
        $.ajax({
            url: "./user/upload_.php",
            type: "POST",
            data: {
                // Try #1
                upload : 1,
                data : file
                // Try #2
                img: img,
            },
            cache: false,
        })
    },
});
upload_p.php
$str_photo = "";
if(isset($_FILES['img'])) { $str_photo = trim($_FILES['img']['name']); }
.
.    
UploadFile($_FILES["img"]["tmp_name"],$str_img_path);
.
.
SQL Query to insert data into database table
.
.
$response['status']='SUC';
$response['message']="Image uploaded successfully";
echo json_encode($response);
return;
 
    