PHP text watermark and PHP image watermark code example

$dst _path = ' dst.jpg '; Create an instance of a picture $DST = imagecreatefromstring (file_get_contents ($DST _path)); Make a text. $font = './SIMSUN.TTC ';//font $black = Imagecolorallocate ($DST, 0x00, 0x00, 0x00);//Font Color Imagefttext ($DST, 0, $black, $font, ' happy programming '); Output picture List ($dst _w, $dst _h, $dst _type) = getimagesize ($dst _path); Switch ($dst _type) { Case 1://gif Header (' content-type:image/gif '); Imagegif ($DST); Break Case 2://jpg Header (' Content-type:image/jpeg '); Imagejpeg ($DST); Break Case 3://png Header (' content-type:image/png '); Imagepng ($DST); Break Default Break } Imagedestroy ($DST); Copy Code Example 2,PHP image watermark image watermark, a picture is added to another picture, mainly using the GD library imagecopy and Imagecopymerge. ： Code: $dst _path = ' dst.jpg '; $src _path = ' src.jpg '; Create an instance of a picture $DST = imagecreatefromstring (file_get_contents ($DST _path)); $SRC = imagecreatefromstring (file_get_contents ($src _path)); Get the width height of the watermark picture List ($src _w, $src _h) = getimagesize ($src _path); The watermark picture is copied to the target image, and the last parameter 50 is the set transparency, which enables the translucent effect Imagecopymerge ($DST, $SRC, ten, 0, 0, $src _w, $src _h, 50); If the watermark picture itself has a transparent color, use the Imagecopy method Imagecopy ($DST, $SRC, ten, 0, 0, $src _w, $src _h); Output picture List ($dst _w, $dst _h, $dst _type) = getimagesize ($dst _path); Switch ($dst _type) { Case 1://gif Header (' content-type:image/gif '); Imagegif ($DST); Break Case 2://jpg Header (' Content-type:image/jpeg '); Imagejpeg ($DST); Break Case 3://png Header (' content-type:image/png '); Imagepng ($DST); Break Default Break } Imagedestroy ($DST); Imagedestroy ($SRC); Copy Code

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