Add 'Watermark' to Images With PHP

Add 'Watermark' to images with php

A good example in the PHP manual:

// Load the stamp and the photo to apply the watermark to
$stamp = imagecreatefrompng('stamp.png');
$im = imagecreatefromjpeg('photo.jpeg');

// Set the margins for the stamp and get the height/width of the stamp image
$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);

// Copy the stamp image onto our photo using the margin offsets and the photo 
// width to calculate positioning of the stamp. 
imagecopy($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp));

// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);

add watermark image to uploaded image

I tested this using the code below and this worked ok. Obviously I have used paths relevant to my test system but hopefully it should help.

One of the most important and often forgotten things when uploading and dealing with uploaded files is the enctype of the form - so I included my test form as an example.

If you want to save the image as well as display it with the watermark use the imagepng function twice, once with a filename and the other without.

<form method='post' action='/test/so/wtrmarkimg.php' enctype='multipart/form-data'>
    <h1>Image uploader - Watermark</h1>
    <input type='file' name='image' />
    <input type='submit' value='Submit' />
</form>

<?php

    #$path = "../large/";

    $path='c:/temp/';/* output path for images generated */
    $watermarksrc=realpath( 'c:/wwwroot/images/watermark.png' );    

    if( isset( $_FILES['image'] ) ){

        $img_tmpname=$_FILES['image']['tmp_name'];


        $num = substr( md5( mt_rand( 1,9999999999 ) ),0,9);    
        $new_name = $path.$num.".jpg";
        $image = $num.".jpg";

        if( move_uploaded_file( $img_tmpname, $new_name ) ){

            $image = imagecreatefromjpeg( $new_name );
            $logoImage = imagecreatefrompng( $watermarksrc );
            imagealphablending( $logoImage, true );

            $imageWidth=imagesx($image);
            $imageHeight=imagesy($image); 
            $logoWidth=imagesx($logoImage);
            $logoHeight=imagesy($logoImage);

            imagecopy(
              $image,
              $logoImage,
              $imageWidth-$logoWidth, $imageHeight-$logoHeight,
              0, 0,
              $logoWidth, $logoHeight );

            // Set type of image and send the output
            header("Content-type: image/png");
            imagepng( $image );/*display image with watermark */
            @imagepng( $image, $new_name );/* save image with watermark */

            // Release memory
            imagedestroy( $image );
            imagedestroy( $imageLogo );
        }
    } else {
        echo "ERROR";
        print_r($_FILES);   
    }
?>

add watermark to the image and save it as image not php file

Instead of this:

// Output and free memory
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);

Write:

$filename = '/foo/bar.png';
imagepng($im, $filename);
imagedestroy($im);

How do I add the watermark image with different positions in PHP Laravel?

Hey Dude try by replace this code with imagecopyresized function.
I hope it can work for you.
Thanks.

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

// top-left
imagecopy($im, $stamp, -45, -5, 0, 0, imagesx($stamp), imagesy($stamp));

// top-right
imagecopy($im, $stamp, imagesx($im) - $sx + 45, -5, 0, 0, imagesx($stamp), imagesy($stamp));

// bottom-left
imagecopy($im, $stamp, -45, imagesy($im) - $sy + 5, 0, 0, imagesx($stamp), imagesy($stamp));

// bottom-right
imagecopy($im, $stamp, imagesx($im) - $sx + 45, imagesy($im) - $sy + 5, 0, 0, imagesx($stamp), imagesy($stamp));

// center
imagecopy($im, $stamp, (imagesx($im) - $sx)/2, (imagesy($im) - $sy)/2, 0, 0, imagesx($stamp), imagesy($stamp));

Watermark an Image using Text in PHP

One problem I can see straight away is that the $imagetobewatermark variable starts off as a string, then becomes a new blank image object (not an existing image), and when you subsequently create the mark image object, it's not going to work because $imagetobewatermark is no longer a string.

Try:

$imagetobewatermark=imagecreatefrompng("images/muggu.png");
$watermarktext="Muggu";
$font="../font/century gothic.ttf";
$fontsize="15";
$white = imagecolorallocate($imagetobewatermark, 255, 255, 255);
imagettftext($imagetobewatermark, $fontsize, 0, 20, 10, $white, $font, $watermarktext);
header("Content-type:image/png");
imagepng($imagetobewatermark);
imagedestroy($imagetobewatermark);

EDIT:
I failed to notice a typo in your text variable $wartermarktext, which should be $watermarktext.
Correct this and it should work.

How to add watermark to an image at the bottom right in PHP?

You are placing the watermark image in the wrong location. It needs to be relative to the width and height of the source image, as well as the dimensions of the watermark image. This solves your problem:

  imagecopy($img, $watermark, $img_w - $wtrmrk_w, $img_h - $wtrmrk_h, 0, 0, $wtrmrk_w, $wtrmrk_h);

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