AJAX does not send FormData Correctly?

Question

I'm working on something to send one image file and few data to PHP file. So I'm using a Form to do that. This is my JS code;

var pictureForm = new FormData();
var imgFile = $('#avatarSelect')[0];
pictureForm.append('email', email);
pictureForm.append('firName',editfirName);
pictureForm.append('lstName',editlstName);
pictureForm.append('newPass',editpass);
pictureForm.append('newPhn', editphnNum);
pictureForm.append('pictureFile', imgFile.files[0]);

$.ajax({
        type: "POST",
        url: "php/accountUpdate.php",
        dataType:'json',
        data:{pictureForm},
        processData: false,
        contentType: false,
        success : function(response)
        {
            if(response==1)
            {
                alert("Success");

            }
            else
            {
                alert(response);

            }
        }
    });

And accountUpdate.php;

<?php
if($_POST)
{
$userEmail= $_POST['email'];
$userPass= $_POST['newPass'];
$userPhone = $_POST['newPhn'];
$userFName= $_POST['firName'];
$userLName = $_POST['lstName'];
$servername ="localhost";
$username="root";
$password="";
$dbname="AS2014459";

// Some code
}
else
 echo json_encode("Error");
?>

My Problem

However this always alert me "Error". Means $_POST isn't set properly. I couldn't find the reason. But all the variables such as email,editfirname...etc are properly set and have values.

Also when I run that on my local server (removing PHP if($_POST) condition ) console log says undefined index : email. Any guesses?

Answer 1

您尚未关闭if / else语句，因此它每次都会回显错误，并使用isset（$ _ POST）

Answer 2

Try changing the 1 with boolean value ( true )

var pictureForm = new FormData();
var imgFile = $('#avatarSelect')[0];
pictureForm.append('email', email);
pictureForm.append('firName',editfirName);
pictureForm.append('lstName',editlstName);
pictureForm.append('newPass',editpass);
pictureForm.append('newPhn', editphnNum);
pictureForm.append('pictureFile', imgFile.files[0]);

$.ajax({
        type: "POST",
        url: "php/accountUpdate.php",
        dataType:'json',
        data:{pictureForm},
        processData: false,
        contentType: false,
        success : function(response)
        {
            if(response==true)
            {
                alert("Success");

            }
            else
            {
                alert(response);

            }
        }
    });