PHP watermarking method based on the image color field in different locations

PHP watermarking method based on the image color field in different locations

This example describes how to add watermarks to different positions in the image color field in PHP. Share it with you for your reference. The specific implementation method is as follows:

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Function add_wm ($ nmw_water, $ src_file, $ output_file, $ x, $ y ){ If (file_exists ($ output_file )) Return; $ W1 = MagickGetImageWidth ($ nmw_water ); $ H1 = MagickGetImageHeight ($ nmw_water ); $ Nmw = NewMagickWand (); MagickReadImage ($ nmw, $ src_file ); // Adjust the default watermark position $ Lt_w = 50; $ Lt_h = 50; If ($ x = 0 ){ $ W = MagickGetImageWidth ($ nmw ); $ H = MagickGetImageHeight ($ nmw ); $ X = $ w; $ Y = $ h; } Else { // Adjust according to the actual situation $ Lt_w = 30; $ Lt_h = 40; } MagickCompositeImage ($ nmw, $ nmw_water, MW_OverCompositeOp, $ x-$ w1-$ lt_w, $ y-$ h1-$ lt_h ); MagickWriteImage ($ nmw, $ output_file ); DestroyMagickWand ($ nmw ); } // It's still groovy's eachFileRecurse easy to use. Function add_wm_recurse ($ nmw_water, $ to_dir, $ output_dir, $ arr ){ $ Dp = dir ($ to_dir ); While ($ file = $ dp-> read ()){ If ($ file! = '.' & $ File! = '..'){ If (is_dir ($ to_dir. '/'. $ file )){ Mkdir ($ output_dir. '/'. $ file ); Add_wm_recurse ($ nmw_water, $ to_dir. '/'. $ file, $ output_dir. '/'. $ file, $ arr ); } Else { If (! Array_key_exists ($ to_dir. '/'. $ file, $ arr )){ Continue; } $ Sub_arr = $ arr [$ to_dir. '/'. $ file]; If ($ sub_arr ){ $ X = intval ($ sub_arr [0]); $ Y = intval ($ sub_arr [1]); Add_wm ($ nmw_water, $ to_dir. '/'. $ file, $ output_dir. '/'. $ file, $ x, $ y ); } } } } $ Dp-> close (); } $ To_dir = './resized '; $ Output_dir = './output '; // This is the coordinate array (posX, posY) of the area that matches the trousers color obtained by traversing image pixels using java ImageIO) $ Arr = array ( Array (50, 50) ); $ Water = './water.png '; $ Nmw_water = NewMagickWand (); MagickReadImage ($ nmw_water, $ water ); Add_wm_recurse ($ nmw_water, $ to_dir, $ output_dir, $ arr ); DestroyMagickWand ($ nmw_water );

I hope this article will help you with php programming.