PHP File upload, image not posted - php

Question

I'm trying to create a form to upload a file, the problem is that the file won't be uploaded. in my code it returns "Image not uploaded".
I've searched a lot online and all the examples uses the same code.
Code:
<?php
if (isset($_FILES['image_url']) && is_uploaded_file($_FILES['image_url']['tmp_name'])) {
$is_img = getimagesize($_FILES['image_url']['tmp_name']); //Is an image?
if (!$is_img) {
$userfile_name = "It isn't an image";
}
else {
if (!file_exists("/images/products/" . $_FILES['image_url']['name'])) {
$uploaddir = '/images/products/';
$userfile_tmp = $_FILES['image_url']['tmp_name'];
$userfile_name = $_FILES['image_url']['name'];
move_uploaded_file($userfile_tmp, $uploaddir . $userfile_name);
}
else {
$userfile_name = $_FILES['image_url']['name'];
}
}
}
else {
$userfile_name = "Image not uploaded";
}
?>
<form method="POST" action="<?php echo $_SERVER['PHP_SELF']; ?> " enctype=”multipart/form-data”>
<p><label for="image">Immagine: </label>
<input type="file" name="image_url"/></p>
<p><input type="submit" value="Salva" /></p>
</form>
The form has also other fields and the data are correctly send to the server.

Answer 1

Try this
<?php
if (isset($_FILES['image_url']) && is_uploaded_file($_FILES['image_url']['tmp_name'])) {
$is_img = getimagesize($_FILES['image_url']['tmp_name']); //Is an image?
if (!$is_img) {
$userfile_name = "It isn't an image";
}
else {
if (!file_exists("images/products/" . $_FILES['image_url']['name'])) {
$uploaddir = 'images/products/';
$userfile_tmp = $_FILES['image_url']['tmp_name'];
$userfile_name = $_FILES['image_url']['name'];
move_uploaded_file($userfile_tmp, $uploaddir . $userfile_name);
}
else {
$userfile_name = $_FILES['image_url']['name'];
}
}
}
else {
$userfile_name = "Image not uploaded";
}
?>
<form method="POST" action="<?php echo $_SERVER['PHP_SELF']; ?> " enctype="multipart/form-data">
<p><label for="image">Immagine: </label>
<input type="file" name="image_url"/></p>
<p><input type="submit" value="Salva" /></p>
</form>