create temp file name in php

Question

For saving a document/image in PHP, I am using move_uploaded_file($tmp, "location").

I'm getting the value of the document/image while the file is changing, so I got the file name, but I can't create tmp_name, because I'm getting name in the following way:

HTML:

<form action="" method="post" enctype="multipart/form-data">
    <input type="file" name="file" id="upload" onChange="change(this.value)" />
    <input type="submit" name="chk" value="Submit" />
    <div id="div"></div>
</form>

JavaScript:

<script src="js/jquery1.js"></script>
<script>
function change(val){
    $.ajax({
        url:"filecheck.php?id=" + val,
        success:function(res){
            alert(res);
        }
    });
}

PHP: filecheck.php

mysql_connect("localhost","root","");
mysql_select_db("newdatabase");

if(isset($_GET['id']))
{
    $name=$_GET['id'];
    $tmp=$_GET['id']['tmp_name']; //here i need temp file name
    move_uploaded_file($tmp, "C:/xampp/htdocs/jerome/project/newimage/".$name); 
    echo $name;
}

If I get the filename by $_FILES['file']['name'], it means I can get $_FILES['file']['tmp_name'], but I can't get by this way. Can you please give me a suggestion on how to get $_FILES['file']['tmp_name']?

You're referencing $_GET and not $_FILES..... That will be your issue. — Darren
– Darren, Commented Jul 22, 2014 at 7:49
Does not matter, tmp name will never be the original filename.. U have to use the $_FILES array for this (sanwebe.com/2012/06/ajax-file-upload-with-php-and-jquery) — DarkBee
– DarkBee, Commented Jul 22, 2014 at 7:58
calling a function on onChange event doesn't mean that you are uploading a file. So $_FILES will be empty at that time. Certainly you are doing it wrong. — code-jaff
– code-jaff, Commented Jul 22, 2014 at 8:03

Community · Accepted Answer · 2017-05-23 10:33:28Z

1

Your issue is that you're trying to access the file from the $_GET superglobal instead of the $_FILES superglobal where it would be held.

A simple check with the below code would show you the file data:

print_r($_FILES);

There is also an issue with your ajax.

function change(val){
    $.ajax({
        url:"filecheck.php?id=" + val,
        type: "post",
        data: $('#yourformid').serialize()
        success:function(res){
            alert(res);
        }
    });
}

I can see you're trying to do an instant upload via ajax. The way you are doing it now is bad.

You should look at the following tutorials to grasp an understanding of how it should be done:

Otherwise you'd just check like this:

if(!empty($_FILES)) {

    $name = $_FILES['file']['name'];
    $tmp = $_FILES['file']['tmp_name'];
}

NOTE

Look at code-jaffs comment that verifies my point above stating that your files won't upload the way you are currently doing this.

edited May 23, 2017 at 10:33

CommunityBot

11 silver badge

answered Jul 22, 2014 at 8:04

Darren

13.1k4 gold badges44 silver badges81 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

DarkBee Over a year ago

U got a copy/paste error in the last link (google one)

jerome Over a year ago

@Darren, Thanks. Will try another way

jerome Over a year ago

i am using this plugin get what i want a2zwebhelp.com/jquery-php-file-upload..

Avinash Babu · Accepted Answer · 2014-07-22 07:57:20Z

0

The problem is with $tmp=$_GET['id']['tmp_name'];..This should be changed to $tmp=$_FILES['file']['tmp_name']; as code-jaff says..

The usage of get can be found here http://php.net/manual/en/reserved.variables.get.php

answered Jul 22, 2014 at 7:57

Avinash Babu

6,2534 gold badges23 silver badges26 bronze badges

2 Comments

jerome Over a year ago

i can only get file name by GET, can not get by FILES[].. because it's in another page, Is there any way create tmp_name by GET?

Avinash Babu Over a year ago

@user3822048 see $_FILES['file']['tmp_name']; will contain the temporary file name of the file on the server. This is just a placeholder on your server until you process the file.

Collectives™ on Stack Overflow

create temp file name in php

2 Answers 2

3 Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related