Imagecopymerge () function Create translucent watermark step

This time to bring you Imagecopymerge () function to create a translucent watermark step in detail, imagecopymerge () function to create a translucent watermark note what, the following is the actual case, take a look.

<?php//load the image to be watermarked $im = imagecreatefromjpeg (' photo.jpeg ');//First we manually create a watermark image from GD $stamp = imagecreatetruecolor (100, 70); Imagefilledrectangle ($stamp, 0, 0, 0x0000FF), Imagefilledrectangle ($stamp, 9, 9, 0xFFFFFF), Imagestring ($ Stamp, 5, D, ' libgd ', 0x0000FF), Imagestring ($stamp, 3,, ' (c) 2007-9 ', 0x0000FF);//Set the location and size of the watermark image $marge_right = $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 ($stamp), 50);//Save the image to a file and release Put memory imagepng ($im, ' photo_stamp.png '); Imagedestroy ($im);? >

Translucent watermark:

This example uses the Imagecopymerge () function to combine the watermark image with the original image. We can control the transparency of the watermark, which in this case is 50% transparency. In actual use, the use of translucent watermark can not affect the user to view the image under the premise of copyright protection.

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