Example of adding a watermark to a php image

Example of adding a watermark to a php image

Example: php code used to add a watermark to an image. /* // Example $ Image = new Gimage (); $ Image-> limit = 600; // maximum length and width $ Image-> wm_text = "www.linuxlaptop.cn"; // watermark text $ Image-> wm_fontfile = "font/xsuni. ttf"; // font file $ Image-> wm_color = "# ff0000 ″; $ Image-> save_file = export ltcn.jpg "; // save to xx file $ Image-> create(“linuxlaptop.jpg "); // create a file from xx */ /* + ------------------------------ | Create a thumbnail and watermark image + ------------------------------ */ Class Gimage { Var $ input_type = ""; // format of the input image Var $ output_type = "jpg"; // output Image format Var $ limit = 0; // image size limit Var $ filename = ""; // enter the image file name (or image data) Var $ pai_quality = 90; // jpeg image quality Var $ save_file = ''; // output file name Var $ wm_text = ""; // watermark text (Chinese: '() not supported :'() Var $ wm_size = 12; // watermark text size Var $ wm_angle = 0; // watermark text angle Var $ wm_x = 30; // watermark x coordinate Var $ wm_y = 30; // y coordinate of the watermark Var $ wm_color = "# cccccc"; // watermark color Var $ wm_fontfile = "geodesic. ttf"; // watermark font file Function create ($ filename = "") { If ($ filename) $ this-> filename = $ filename; If (! $ This-> input_type) $ this-> get_type (); If (! $ This-> output_type) $ this-> output_type = $ this-> input_type; If ($ this-> input_type = "jpg") $ this-> input_type = "jpeg "; If ($ this-> output_type = "jpg") $ this-> output_type = "jpeg "; Switch ($ this-> input_type ){ Case 'GIF ': $ Src_img = ImageCreateFromGIF ($ this-> filename ); Break; Case 'jpeg ': $ Src_img = ImageCreateFromJPEG ($ this-> filename ); Break; Case 'PNG ': $ Src_img = ImageCreateFromPNG ($ this-> filename ); Break; Default: $ Src_img = ImageCreateFromString ($ this-> filename ); Break; } $ Src_w = ImageSX ($ src_img ); $ Src_h = ImageSY ($ src_img ); If ($ src_w >=$ src_h ){ If ($ src_w> $ this-> limit ){ $ New_w = $ this-> limit; $ New_h = ($ this-> limit/$ src_w) * $ src_h; } } Else { If ($ src_h> $ this-> limit ){ $ New_h = $ this-> limit; $ New_w = ($ this-> limit/$ src_h) * $ src_w; } } If ($ new_h ){ $ Dst_img = imagecreatetruecolor ($ new_w, $ new_h ); Imagecopyresampled ($ dst_img, $ src_img, 0, 0, 0, $ new_w, $ new_h, ImageSX ($ src_img), ImageSY ($ src_img )); } Else { $ Dst_img = $ src_img; } If ($ this-> wm_text) { If (preg_match ("/([a-f0-9] [a-f0-9]) ([a-f0-9] [a-f0-9]) ([a-f0-9])/I", $ this-> wm_color, $ color )) { $ Red = hexdec ($ color [1]); $ Green = hexdec ($ color [2]); $ Blue = hexdec ($ color [3]); } $ Wm_color = imagecolorallocatealpha ($ dst_img, $ red, $ green, $ blue, 90 ); Imagettftext ($ dst_img, $ this-> wm_size, $ this-> wm_angle, $ this-> wm_x, $ this-> wm_y, $ wm_color, $ this-> wm_fontfile, $ this-> wm_text ); } If ($ this-> save_file) { Switch ($ this-> output_type ){ Case 'GIF ': $ Src_img = ImagePNG ($ dst_img, $ this-> save_file ); Break; Case 'jpeg ': $ Src_img = ImageJPEG ($ dst_img, $ this-> save_file, $ this-> 1__quality ); Break; Case 'PNG ': $ Src_img = ImagePNG ($ dst_img, $ this-> save_file ); Break; Default: $ Src_img = ImageJPEG ($ dst_img, $ this-> save_file, $ this-> 1__quality ); Break; } } Else { Header ("Content-type: image/{$ this-> output_type }"); Switch ($ this-> output_type ){ Case 'GIF ': $ Src_img = ImagePNG ($ dst_img ); Break; Case 'jpeg ': $ Src_img = ImageJPEG ($ dst_img, "", $ this-> pai_quality ); Break; Case 'PNG ': $ Src_img = ImagePNG ($ dst_img ); Break; Default: $ Src_img = ImageJPEG ($ dst_img, "", $ this-> pai_quality ); Break; } } Imagedestroy ($ dst_img ); } Function get_type () // Obtain the image file type { $ Name_array = explode (".", $ this-> filename ); If (preg_match ("/\. (jpg | jpeg | gif | png) $/", $ this-> filename, $ matches )) { $ This-> input_type = strtolower ($ matches [1]); } Else { $ This-> input_type = "string "; } } }