PHP uploading seems to default to 72 dpi, I need 300 dpi - php

Question

I have a page while is used only for print, and some of the images on there are uploaded through a script I have. It seems to always reduce the image to 72 dpi, reguardless of what I set imagejpeg() and imagepng() to for quality.
I've used my own personal script and this one on git hub
https://github.com/maxim/smart_resize_image
I was hoping for a little guidance on preserving the dpi at the original 300dpi.
Here is my own personal script
if (!empty($_FILES['image']['name'])) //checking if file upload box contains a value
{
$saveDirectory = 'pics/'; //name of folder to upload to
$tempName = $_FILES['image']['tmp_name']; //getting the temp name on server
$fileName1 = $_FILES['image']['name']; //getting file name on users computer
$count = 1;
do{
$location = $saveDirectory . $_GET['section'] . $count . $fileName1;
$count++;
}while(is_file($location));
if (move_uploaded_file($tempName, $location)) //Moves the temp file on server
{ //to directory with real name
$image = $location;
// Get new sizes
list($width, $height, $type) = getimagesize($image); //gets information about new server image
$framewidth = 932;
$frameheight = 354;
$realwidth = $width; //setting original width and height
$realheight = $height;
// Load
$file1new = imagecreatetruecolor($framewidth, $frameheight); //creates all black image with target w/h
if($type == 2){
$source = imagecreatefromjpeg($image);
imagecopyresampled($file1new, $source , 0, 0, 0, 0, $framewidth, $frameheight, $realwidth, $realheight);
}
elseif($type == 3){
$source = imagecreatefrompng($image);
imagecopyresampled($file1new, $source , 0, 0, 0, 0, $framewidth, $frameheight, $realwidth, $realheight);
}
else{
echo "Wrong file type";
}
if($type == 2){
//creates jpeg image from file1new for file1 (also retains quality)
imagejpeg($file1new, $image,100);
//frees space
imagedestroy($file1new);
}
elseif($type == 3){
//creates png image from file1new for file1 (also retains quality)
imagepng($file1new, $image,10);
//frees space
imagedestroy($file1new);
}
else{
echo "Wrong file type";
}
}
else
{
echo '<h1> There was an error while uploading the file.</h1>';
}
}
}
Edit: Even if dpi isn't the answer, as I see jpgs in specific don't retain that information. I need some way of keeping these images very clear and crisp.

Answer 1

If you generate image and open with a browser, the browser will reduce it to 72dpi before rendering.
If you open with gimp/phptoshop/whatever image editor , it should preserve the same dpi quality.
Though on a screen, there is no difference since your screen is 72 dpi.
Not tested on new browsers, but it was like this in netscape and first firefox versions, I assume it has not changed since.

Answer 2

The function posted by lorezyra (at) lorezyra (dot) com here: http://www.php.net/manual/es/function.imagejpeg.php#85712 might do the trick.