PHP watermark image

Question

I am trying to watermark images on upload.

I have a multi upload script in place which works fine, see below:

           $gallery=$_GET["gallery"];
                    $album=$_GET["album"];
if(isset($_FILES['files'])){
    $errors= array();
    foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){
        $file_name = $key.$_FILES['files']['name'][$key];
        $file_size =$_FILES['files']['size'][$key];
        $file_tmp =$_FILES['files']['tmp_name'][$key];
        $file_type=$_FILES['files']['type'][$key];  
        if($file_size > 2097152){
            $errors[]='File size must be less than 2 MB';
        }       
        $query="INSERT into commerce_images (`USER_ID`,`FILE_NAME`,`FILE_SIZE`,`FILE_TYPE`, `added_by`, `gallery_id`, `sub_gallery_id`) 
        VALUES('$user','$file_name','$file_size','$file_type', '$Fname $Sname', '$gallery', '$album'); ";
        $desired_dir="uploads";
        if(empty($errors)==true){
            if(is_dir($desired_dir)==false){
                mkdir("$desired_dir", 0700);        // Create directory if it does not exist
            }
            if(is_dir("$desired_dir/".$file_name)==false){
                move_uploaded_file($file_tmp,"$desired_dir/".$file_name);
            }else{                                  // rename the file if another one exist
                $new_dir="$desired_dir/".$file_name.time();
                 rename($file_tmp,$new_dir) ;               
            }
         mysql_query($query);           
        }else{
                print_r($errors);
        }
    }
    if(empty($error)){
?>

<script>location.assign("commerce-images.php?state=new");</script>
                                        <?php
    }
}
?>

Is it possible to watermark all images uploaded using my script?

Have you tried anything? Maybe something like [this](http://php.net/manual/en/image.examples-watermark.php) ? Also - you shouldn't use the mysql* functions anymore as they are deprecated. Switch to `mysqli` or `PDO`. — uri2x, Sep 12 '15 at 15:29
@uri2x - Thanks for your comment. I have looked at that yes, but as a newbie I'm not sure how that fits into my script? — Shaun, Sep 12 '15 at 15:30
if you want to show more of your query info, I can convert it to PDO for you while you wait for the smart PHP people — Drew, Sep 12 '15 at 15:33
how about obfuscated connection info and the `$query` assembly. Cool thx — Drew, Sep 12 '15 at 15:35
@Shaun what kind of watermark are you trying to add? Text or an other picture in a transparent layer? — kayess, Sep 12 '15 at 15:41
possible duplicate of [Add 'Watermark' to images with php](http://stackoverflow.com/questions/2235152/add-watermark-to-images-with-php) — Boaz, Sep 12 '15 at 16:12

score 2 · Answer 1 · answered Sep 12 '15 at 16:29

Off topic, but requested, hopefully it helps someone get from mysql_* to PDO out there. PDO Manual Page for bindParam, to point you someplace at least.

Schema

create table commerce_images 
(   `id` int auto_increment primary key,
    `USER_ID` int not null,
    `FILE_NAME` varchar(123) not null,
    `FILE_SIZE` int not null,
    `FILE_TYPE` int not null, 
    `added_by` varchar(100), 
    `gallery_id` int not null, 
    `sub_gallery_id` int not null
);

php

<?php
    // Begin Vault (this is in a vault, not actually hard-coded)
    $host="localhost";
    $username="GuySmiley";
    $password="anchovies_¿^?fish╔&®";
    $dbname="so_gibberish";
    // End Vault

    try {

        $dbh = new PDO("mysql:host=$host;dbname=$dbname;charset=utf8", $username, $password);
        $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

        $user=456;
        $file_name="/path";
        $file_size=29832;
        $file_type=3;
        $Fname="Kim";
        $Sname="Billings";
        $gallery=35;
        $album=9;

        $FullName="$Fname $Sname";

        // prepared statement with named placeholders for sanity of not using index values of placeholders
        $stmt = $dbh->prepare("INSERT into commerce_images (`USER_ID`,`FILE_NAME`,`FILE_SIZE`,`FILE_TYPE`, `added_by`, `gallery_id`, `sub_gallery_id`) 
        VALUES(:user,:file_name,:file_size,:file_type,:FullName,:gallery,:album)");
        $stmt->bindParam(':user', $user, PDO::PARAM_INT);   // correct this datatype
        $stmt->bindParam(':file_name', $file_name, PDO::PARAM_STR,123); // size it
        $stmt->bindParam(':file_size', $file_size, PDO::PARAM_INT);
        $stmt->bindParam(':file_type', $file_type, PDO::PARAM_INT); // correct this datatype
        $stmt->bindParam(':FullName', $FullName, PDO::PARAM_STR,123);   // size it
        $stmt->bindParam(':gallery', $gallery, PDO::PARAM_INT); // correct this datatype
        $stmt->bindParam(':album', $album, PDO::PARAM_INT); // correct this datatype
        $stmt->execute();

        $stmt = null;
        // PDO closes connection at end of script

    } catch (PDOException $e) {
        echo 'PDO Exception: ' . $e->getMessage();
        exit();
    }
?>

Results

select * from commerce_images;
+----+---------+-----------+-----------+-----------+--------------+------------+----------------+
| id | USER_ID | FILE_NAME | FILE_SIZE | FILE_TYPE | added_by     | gallery_id | sub_gallery_id |
+----+---------+-----------+-----------+-----------+--------------+------------+----------------+
|  1 |     456 | /path     |     29832 |         3 | Kim Billings |         35 |              9 |
+----+---------+-----------+-----------+-----------+--------------+------------+----------------+

No, this code is responsible for one thing only (as it should be), handling the persistence to database. — kayess, Sep 12 '15 at 16:41
no sir, as seen in earlier comments, as I was saying I would show PDO while the smart PHP people helped with watermarks. — Drew, Sep 12 '15 at 16:41

kayess · Accepted Answer · 2015-09-15T07:49:11.117

While OP's question wasnt crystal clear on the exact method of watermarking, im showing here text and image watermarking capabilities using the GD library.

Adding text as watermark (using TTF font): Gist

function add_text_watermark($kep,$Text,$WatermarkNeeded = 1) {
    list($img_type, $Image) = getImage($kep);

$sx = imagesx($Image) ;
$sy = imagesy($Image) ;

if ($WatermarkNeeded)
    { 
    /* Set the font */
    $Font="_arial.ttf";
    $FontColor = ImageColorAllocate ($Image,204,204,204) ;
    $FontShadow = ImageColorAllocate ($Image,100,100,100) ;
    $Rotation = 0 ;
    /* Make a copy image */
    $OriginalImage = ImageCreateTrueColor($sx,$sy) ;
    ImageCopy ($OriginalImage,$Image,0,0,0,0,$sx,$sy) ;

    /* Iterate to get the size up */
    $FontSize=1 ;
    do
        {
        $FontSize *= 1.1 ;
        $Box = @ImageTTFBBox($FontSize,0,$Font,$Text);
        $TextWidth = abs($Box[4] - $Box[0]) ;
        $TextHeight = abs($Box[5] - $Box[1]) ;
        }
    while ($TextWidth < $sx*0.9 && $FontSize < 30) ;
    /*  Awkward maths to get the origin of the text in the right place */
    $x = $sx/2 - cos(deg2rad($Rotation))*$TextWidth/2 ;
    $y = $sy/2 + sin(deg2rad($Rotation))*$TextWidth/2 + cos(deg2rad($Rotation))*$TextHeight/2 ;
    /* Make shadow text first followed by solid text */

    ImageTTFText ($Image,$FontSize,$Rotation,$x+1,$y+1,$FontShadow,$Font,$Text);
    ImageTTFText ($Image,$FontSize,$Rotation,$x,$y,$FontColor,$Font,$Text);

    /* merge original image into version with text to show image through text */
    ImageCopyMerge ($Image,$OriginalImage,0,0,0,0,$sx,$sy,50) ;
    imagejpeg($Image, $kep, 100);
    }
}

function getImage($res) {
    $img = "";
    $type = "";

    if (intval(@imagesx($res)) > 0) {
        $img = $res;
    } else {
        $imginfo = getimagesize($res);

        switch($imginfo[2]) { // Determine type
            case 1:
                $type = "GIF";
                if (function_exists("imagecreatefromgif")) {
                    $img = imagecreatefromgif($res);
                } else {
                    die("Unsupported image type: $type");
                }
                break;
            case 2:
                $type = "JPG";
                if (function_exists("imagecreatefromjpeg")) {
                    $img = imagecreatefromjpeg($res);
                } else {
                    die("Unsupported image type: $type");
                }
                break;
            case 3:
                $type = "PNG";
                if (function_exists("imagecreatefrompng")) {
                    $img = imagecreatefrompng($res);
                } else {
                    die("Unsupported image type: $type");
                }
                break;
        }
    }

    return array($type, $img);
}

EDIT: make sure the ttf font file you are trying to add as watermark text are in sight of the path!

Adding Image as watermark: Gist

function generate_watermarked_image($originalFileContents, $originalWidth, $originalHeight, $paddingFromBottomRight = 0, $watermarkFileLocation = 'logo.png') {
$watermarkImage = imagecreatefrompng($watermarkFileLocation);
$watermarkWidth = imagesx($watermarkImage);  
$watermarkHeight = imagesy($watermarkImage);

$originalImage = imagecreatefromstring($originalFileContents);

$destX = $originalWidth - $watermarkWidth - $paddingFromBottomRight;  
$destY = $originalHeight - $watermarkHeight - $paddingFromBottomRight;

// creating a cut resource
$cut = imagecreatetruecolor($watermarkWidth, $watermarkHeight);

// copying that section of the background to the cut
imagecopy($cut, $originalImage, 0, 0, $destX, $destY, $watermarkWidth, $watermarkHeight);

// placing the watermark now
imagecopy($cut, $watermarkImage, 0, 0, 0, 0, $watermarkWidth, $watermarkHeight);

// merging both of the images
imagecopymerge($originalImage, $cut, $destX, $destY, 0, 0, $watermarkWidth, $watermarkHeight, 100);

return $originalImage;
}

You can call it as:

$Image = "$desired_dir/".$file_name;

imagejpeg(generate_watermarked_image(file_get_contents($Image), imagesx($Image), imagesy($Image), 10), $Image."-watermarked.jpg", 100);

EDIT: make sure the logo.png or whatever file you are trying to add as watermark are in sight of the path!

Thanks where in my code does this go / what does it replace? — Shaun, Sep 12 '15 at 15:54
@Shaun IMHO right at the place where you are storing the file at its final place. Eg. after your file system operations copy/move/rename. — kayess, Sep 12 '15 at 15:56
@Shaun before or after where you have the line with `mysql_query($query);`. Which i meant as the file is stored on its final place at. — kayess, Sep 12 '15 at 16:03
@kayees sorry to be a pest, but could you show me the new code (mine above) edited with yours? — Shaun, Sep 12 '15 at 16:05
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/89466/discussion-between-shaun-and-kayess). — Shaun, Sep 12 '15 at 16:14

PHP watermark image

2 Answers2

Schema

php

Results