image-php-examples-watermark-0

  • Examples

    • Adding watermarks to images using alpha
    channels

  • Adding watermarks to images using alpha channels

    • Adding watermarks to images using alpha
    channels

    Adding watermarks to images using alpha
    channels

    Example #1 Adding watermarks to images using alpha
    channels

    <?php
    // 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);
    ?>

    Adding watermarks to images using alpha channels

    This example is a common way to add watermarks and stamps to photos
    and copyrighted images. Note that the presence of an alpha channel
    in the stamp image as the text is anti-aliased. This is preserved
    during copying.