PHP uses the Imagecopymerge () function to create a translucent watermark method

This piece explains how to create a translucent watermark using the Imagecopymerge () function in PHP.

Use the Imagecopymerge () function to create a translucent watermark for everyone's reference, as follows

Load the image you want to add a watermark to

$im = Imagecreatefromjpeg (' photo.jpeg ');

First we create the watermark image manually from GD

$stamp = Imagecreatetruecolor (100, 70); Imagefilledrectangle ($stamp, 0, 0, 0x0000FF), Imagefilledrectangle ($stamp, 9, 9, 0xFFFFFF); Imagestring ($stamp, 5, (3), ' LIBGD ', 0x0000FF), imagestring ($stamp), (c) 2007-9 ', 0x0000FF);

Set the location and size of the watermark image

$marge _right = 10; $marge _bottom = ten; $sx = Imagesx ($stamp); $sy = Imagesy ($stamp);

Combine watermarks and images with 50% transparency

Imagecopymerge ($im, $stamp, Imagesx ($im)-$sx-$marge _right, Imagesy ($im)-$sy-$marge _bottom, 0, 0, Imagesx ($stamp), Imagesy ($stamp), 50);

Save the image to a file and free up memory

Imagepng ($im, ' photo_stamp.png '); Imagedestroy ($im);?>

This article explains how PHP uses the Imagecopymerge () function to create a translucent watermark, and more about the PHP Chinese web.