Uploading image failing on php back-end - php

Question

I'm trying to implement a small update profile pic form.
<form method="post" action="<?php echo $filename;?>" name="change_picture_form" id="change_picture_form" enctype="multipart/form-data">
<input type="hidden" name="action" value="change_picture" />
<input type="file" name="new_user_picture">
<input type="submit" class="submitButton" value="Save Changes"/>
</form>
The target php file has the following code:
echo $_FILES['new_user_picture']['size']." ";
echo $_FILES['new_user_picture']['tmp_name']." ";
echo $_FILES['new_user_picture']['name']." ";
echo $_FILES['new_user_picture']['error']." ";
echo $_FILES['new_user_picture']['type']." ";
$picture_uploaded = $_FILES["new_user_picture"]["tmp_name"];
if( is_uploaded_file( $picture_uploaded ) ) {
$imagesize = getimagesize( $picture_uploaded );
switch( $imagesize[2] ) {
case IMAGETYPE_PNG:
$extension = '.png';
echo "<script>console.log('Reached here!!')</script>";
try {
$image_original = imagecreatefrompng( $picture_uploaded );
if (!$image_original)
echo '<script>console.log("not image original")</script>';
} catch(Exception $e) {
echo "<script>console.log('Error!!')</script>";
}
break;
case IMAGETYPE_JPEG: ....
...
}
}
Here, I have similar code for many image types. I tested this code by trying to uploading a png image. The first 5 echo statements display expected results - the size, error value of zero, the name, the type and the temp name.
I get "Reached here!!" on my console.
imagecreatefrompng, however, seems to crash silently. Try-catch somehow doesn't seem to catch the error.
Help? Thanks!

Answer 1

I haven't handled file uploads in PHP in forever, but is it possible that this line:
$picture_uploaded = $_FILES["new_user_picture"]["tmp_name"]
should be
$picture_uploaded = $_FILES["new_user_picture"] ?
The first line, as is, should be getting you the uploaded file's file name, whereas the second line (the edited line above) should be a reference to the file itself.
HTH.
EDIT: Well, seeing as how my answer is incorrect... does this help? http://www.php.net/manual/en/function.imagecreatefromstring.php
. There's a helper function in the user notes/comments that might simplify what you're doing