PHP upload images failure - php

Question

I'm using PHP to create a website for a FileMaker database. What I want to do is upload an image file so it can be accessed by the database.
This is the code I have (which came from a tutorial):
if (isset($_POST['action']) and $_POST['action'] == 'Upload') {
# set the destination directory for the image
$image_directory = 'http://mydomain.com/Images/My_Example/';
# set the temp and dest file names with paths
$temporary_file = $_FILES['new_image']['tmp_name'];
$destination_file = $image_directory . $_FILES['new_image']['name'];
# move file to the images directory
$result = move_uploaded_file($temporary_file, $destination_file);
if ($result) {
# insert the URL into the product record
$edit = $fm->newEditCommand('Product', $_REQUEST['recid']);
$edit->setField('Thumbnail URL', $destination_file);
$edit->execute();
} else {
$error_message = nl2br("temporary_file = ".$temporary_file."\n");
$error_message.= nl2br("destination_file = ".$destination_file."\n\n");
echo $error_message;
die('There was an error moving the file.');
}
}
I understand that the function 'move_uploaded_file()' will move the temporary file, but I can't see a statement that actually uploads to the temporary file in the first place. What am I missing, please? (I don't know if this is a red herring!)
But 'move_uploaded_file()' fails, and I get the error message (which I added to try to debug it) and the 'die' message. Is there any way to get an error code, to tell me why it failed?
I'm assured that the relevant directory does have read/write access. And 'mydomain.com' is actually replaced by the real domain in the script.
Any advice gratefully received. I'm a newbie to PHP, so please bear that in mind when answering! Many thanks.
Cheers

Answer 1

you are using the destination directory path with 'http://mydomain.com/Images/My_Example/', which will not work.
in order to save the file, you need to give it absolute path on the server - means if the DOCUMENT_ROOT folder is "/var/www/html/", then you'll need to upload it to "/var/www/html/Images/My_Example'.
you can check your DOCUMENT_ROOT path in the $_SERVER['DOCUMENT_ROOT'] variable, with phpinfo() command in php, or in your apache.conf files.
also you need to make sure your php has writing permission on the folder you trying to save into.

Answer 2

The problem is in this statement :
$image_directory = 'http://mydomain.com/Images/My_Example/';
When you upload file, you cannot give the url in the destination path. You need to use the relative path like:
$image_directory = './Images/My_Example/';

Answer 3

first of all: try these error messages
the error message is in: $_FILES['upfile']['error']
switch ($_FILES['upfile']['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('No file sent.');
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('Exceeded filesize limit.');
default:
throw new RuntimeException('Unknown errors.');
}
secondly: http://mydomain.com/Images/My_Example/ is not a vaild upload path.

Answer 4

http://mydomain.com/Images/My_Example/ is not valid becuase it is a URL path. You need to specify a directory path:
//$image_directory = 'http://mydomain.com/Images/My_Example/';
// change to:
$image_directory = 'path/to/Images/folder/';