PHP based on image Color zone location and watermark

How does PHP implement a watermark based on the image Color zone location? This paper mainly introduces PHP according to the picture color boundary in different location and watermark method, can realize the image watermark according to the color environment dynamic add function. We hope to help you.

The implementation method is as follows:

function Add_wm ($NMW _water, $src _file, $output _file, $x, $y) {if (file_exists ($output _file)) return;        $w 1 = magickgetimagewidth ($NMW _water);        $h 1 = magickgetimageheight ($NMW _water);        $NMW =newmagickwand ();        Magickreadimage ($NMW, $src _file);        The default watermark position adjustment $lt _w = 50;        $lt _h = 50;          if ($x = = 0) {$w = Magickgetimagewidth ($NMW);          $h = Magickgetimageheight ($NMW);          $x = $w;        $y = $h;          }else{//Adjust $lt _w = 30 depending on the situation;        $lt _h = 40;        } magickcompositeimage ($NMW, $NMW _water, Mw_overcompositeop, $x-$w 1-$lt _w, $y-$h 1-$lt _h);        Magickwriteimage ($NMW, $output _file);          Destroymagickwand ($NMW); }//or groovy Eachfilerecurse useful ah 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) $arr = Array (Array (50, 50) that I used to traverse the image pixel of the ImageIO in Java to get the area of the trousers color.      $water = './water.png ';      $NMW _water =newmagickwand ();      Magickreadimage ($NMW _water, $water);      Add_wm_recurse ($NMW _water, $to _dir, $output _dir, $arr); Destroymagickwand ($NMW _water);

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