Error in create_thumbnail function - php

Question

I am trying to upload an image using a form, everything so far in the form functions well except i get this error after i submit the form and the data gets submitted to the database table : **
Notice>: Undefined offset: 1 in D:\wamp\www\asserter\includes\create_thumbnail.php on line 40
this is the line 40 in the create_thumbnail() function : imagecopyresampled($thumb, $src, 0, 0, $src_pos[0], $src_pos[1], $new_size[0], $new_size[1], $size[0], $size[1]);
if comment the create_thumbnail() in my codes everything works fine and the image gets uploaded and i get no error back, but when i add create_thumbnail() line of code the original image does not get uploaded to the path but the thumbnail gets created and i still get this error ! please help !
here is my codes :
if ($_FILES["discussion_image"]["name"] != "") {
$test = explode(".", $_FILES["discussion_image"]["name"]);
$extension = end($test);
$name = rand(100, 9999999999);
$file_temp = $_FILES['discussion_image']['tmp_name'];
$file_path = '../uploaded_pictures/uploads/' . $user_id . '/'. $name .'.'.$extension;
//$file_path = mysqli_real_escape_string($connection, $file_path);
move_uploaded_file($file_temp, $file_path); // move_uploaded_file() is a built in function of PHP
$query = "INSERT INTO discussions_table (user_id, title, link, image_link, subject, discussion, discussion_timestamp) VALUES ($user_id, '$title', '$link', '$file_path', '$subject', '$discussion', $discussion_timestamp)";
$save_path = '../uploaded_pictures/uploads/' . $user_id . '/'. $name.'.jpg';
//$save_path_small = "../uploaded_pictures/uploads/" . $user_id . "/" . $name.'small.jpg';
create_thumbnail($file_path, $save_path, 250, 250); // creates thumbnail for profile picture
//create_thumbnail($file_path, $save_path_small, 50, 50); // creates thumbnail for small user picture
}
and here is my create_thumbnail function :
function create_thumbnail($path, $save, $width, $height) {
$info = getimagesize($path);
$size = array($info[0], $info[1]); // info[0] is the width and info[1] is the height
if ($info['mime'] == 'image/png') {
$src = imagecreatefrompng($path);
} else if ($info['mime'] == 'image/jpeg') {
$src = imagecreatefromjpeg($path);
} else {
return false;
}
$thumb = imagecreatetruecolor($width, $height);
$src_aspect = $size[0] / $size[1];
$thumb_aspect = $width / $height;
if ($src_aspect < $thumb_aspect) {
// means the image is narrower so we want to crop the top and bottom
$scale = $width / $size[0]; // width of the thumb and width of the actual image
$new_image = array($width, $width / $src_aspect);
$src_pos = array(0, ($size[1] * $scale - $height) / $scale / 2); // we are fixing x position to 0 and calculating the y position
} else if ($src_aspect > $thumb_aspect) {
// means image is wider so we need to crop left and right
$scale = $height / $size[1];
$new_size = array($height * $src_aspect, $height);
$src_pos = array(($size[0] * $scale - $width) / $scale / 2); // we are fixing y position to 0 and calculating the x position
} else {
// this means it is the same shape as the thumbnail we are creating
$new_size = array($width, $height);
$src_pos = array(0, 0);
}
$new_size[0] = max($new_size[0], 1);
$new_size[1] = max($new_size[1], 1);
imagecopyresampled($thumb, $src, 0, 0, $src_pos[0], $src_pos[1], $new_size[0], $new_size[1], $size[0], $size[1]);
if ($save === false) {
return imagejpeg($thumb);
} else {
return imagejpeg($thumb, $save);
}
}

Answer 1

Thanks everyone for your help, I found the bug !
it was a naming issue, i should replace this $new_image = array($width, $width / $src_aspect); with this $new_size = array($width, $width / $src_aspect);