PHP _php techniques to add watermarks to different locations based on image color boundaries

This article illustrates how PHP adds watermarks to different locations based on the color boundaries of the image. Share to everyone for your reference. 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{//Adjusted $LT _w = 30 According to the specific conditions;    
    $lt _h = 40;    
    Magickcompositeimage ($NMW, $NMW _water, Mw_overcompositeop, $x-$w 1-$lt _w, $y-$h 1-$lt _h);    
    Magickwriteimage ($NMW, $output _file);        
  Destroymagickwand ($NMW); //or Groovy eachfilerecurse. function Add_wm_recurse ($NMW _water, $to _dir, $output _dir, $arr) {$DP = d    
    IR ($to _dir); while ($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 matches the color of the trousers with the Java ImageIO traversing the image pixel;    
  $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 your PHP programming.