PHP Upload file from Image variable

Question

My Idea is to upload a image file that is combined with a watermark. This code needs to work like this. On a portfolio website, the owner uploads an image he wants to sell throught the CMS i made. But because he wants to sell the image he wants it to come on the site with a watermark.

So my idea, i let him upload the original image, then i get the image through the $_Files() en combine it with a watermark, make it one image again and upload that image.

Now is my question, how do i upload a image created in PHP i tried to convert it to Base64 but with no luck. Here is my code.

Sorry for the bad english!

$target_dir = "uploads/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);


$filetype =  substr($target_file, -4);

if($filetype == ".gif") $image = @imagecreatefromgif($_FILES["fileToUpload"]["tmp_name"]);
if($filetype == ".jpg") $image = @imagecreatefromjpeg($_FILES["fileToUpload"]["tmp_name"]);
if($filetype == ".png") $image = @imagecreatefrompng($_FILES["fileToUpload"]["tmp_name"]);
if (empty($image)) die();
$watermark = @imagecreatefrompng('watermark.png');
$imagewidth = imagesx($image);
$imageheight = imagesy($image);
$watermarkwidth = imagesx($watermark);
$watermarkheight = imagesy($watermark);
$startwidth = (($imagewidth - $watermarkwidth)/2);
$startheight = (($imageheight - $watermarkheight)/2);
imagecopy($image, $watermark,  $startwidth, $startheight, 0, 0, $watermarkwidth, $watermarkheight);

file_put_contents($target_file, $image)

imagejpeg should do the trick -> php.net/manual/en/function.imagejpeg.php (instead of file_put_contents) — Raphael Müller
– Raphael Müller, Commented Jan 12, 2015 at 14:51
I think you use use move_uploaded_file first to "upload" the file to a temp folder, then manipulate it however you need, then save it to its final location. — gen_Eric
– gen_Eric, Commented Jan 12, 2015 at 14:52
@RocketHazmat I think you don't have to use move_uploaded_file, because the file is already in a temporary directory. but if the OP want's to save the original file he should use it to save the image on the server in addition to the watermarked one. — Raphael Müller
– Raphael Müller, Commented Jan 12, 2015 at 14:55

Anton Mitsev · Accepted Answer · 2015-01-12 14:59:15Z

1

Try this: imagejpeg($image, $target_file); or imagepng($image, $target_file); or imagegif($image, $target_file);

answered Jan 12, 2015 at 14:59

Anton Mitsev

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