PHP create image from application/octet stream

Question

My application is having images sent to it from mobile devices with the content-type "application/octet-stream".

I need to process these images using the GD library, which means I need to be able to create an image object from the data.

Typically, I have been using imagecreatefromjpeg, imagecreatefrompng, imagecreatefromgif, etc, to handle files uploaded from web forms, but these don't seem to work when coming to me as application/octet-stream.

Any ideas on how I can achieve my goal?

EDIT

Here is the code I use to create the image identifier...my handler works perfectly throughout my site, the only difference I can tell between my site and the data from the iOS is the content-type

public function open_image($path) {
        # JPEG:
        $im = @imagecreatefromjpeg($path);
        if ($im !== false) { $this->image = $im; return $im; }

        # GIF:
        $im = @imagecreatefromgif($path);
        if ($im !== false) { $this->image = $im; return $im; }

        # PNG:
        $im = @imagecreatefrompng($path);
        if ($im !== false) { $this->image = $im; return $im; }

        $this->error_messages[] = "Please make sure the image is a jpeg, a png, or a gif.";
        return false;
    }

Solution

Easy :)

$image = imagecreatefromstring( $data );

Specifically:

$data = file_get_contents($_FILES['myphoto']['tmp_name']);
$image = imagecreatefromstring( $data );

Comments

[johnnietheblack]

HEYAAA, is the $data simply to be found as $_FILES['myphoto']['tmp_name']?

[Christian]

@johnnietheblack - Not exactly, but near enough: $image = imagecreatefromstring( file_get_contents($_FILES['myphoto']['tmp_name']) );

[johnnietheblack]

ahh, that makes sense...so the tmp file is basically just a "text file" with the string inside? (im obviously new to this aspect of data handling)

[Christian]

@johnnietheblack - The tmp file is probably binary (unless the uploaded image is an SVG), and file_get_contents() just gets the data. The 'tmp_file' part just contains the file name as stored on the server. You can see this by using: echo '<pre>'.print_r($_FILES,true).'</pre>; <- by the way, that's a very useful snippet for inspecting PHP variables.