php watermarked code of support translucent transparent watermarking support png transparent background

  • 2020-05-27 04:39:15
  • OfStack


// The original image  
       $dst = "/upload/20120914/20120914040740-0.jpg"; // Note that the picture path should be correct  
       // Get the original image information  
       $dst_info = getimagesize($dst);  
       switch ($dst_info[2]) 
       { 
        case 1: 
        $dst_im =imagecreatefromgif($dst);break; 
        case 2: 
        $dst_im =imagecreatefromjpeg($dst);break; 
        case 3: 
        $dst_im =imagecreatefrompng($dst);break; 
        case 6: 
        $dst_im =imagecreatefromwbmp($dst);break; 
        default: 
        die(" Unsupported file types 1");exit; 
       } 
       // Watermark image  
       $src = "/images/shuiyin.png"; // Make sure you get the path right  
       $src_info = getimagesize($src); 
       switch ($src_info[2]) 
       { 
        case 1: 
        $src_im =imagecreatefromgif($src);break; 
        case 2: 
        $src_im =imagecreatefromjpeg($src);break; 
        case 3: 
        $src_im =imagecreatefrompng($src);break; 
        case 6: 
        $src_im =imagecreatefromwbmp($src);break; 
        default: 
        die(" Unsupported file types 1");exit; 
       } 

       // Semi-transparent watermarking  
       //$alpha = 50;// Watermark transparency  
       //imagecopymerge($dst_im,$src_im,$dst_info[0]-$src_info[0]-10,$dst_info[1]-$src_info[1]-10,0,0,$src_info[0],$src_info[1],$alpha); 

       // support png Its own way of transparency  
       imagecopy($dst_im,$src_im,$dst_info[0]-$src_info[0]-10,$dst_info[1]-$src_info[1]-10,0,0,$src_info[0],$src_info[1]); 

       // Save the picture  
       switch ($dst_info[2]){ 
        case 1: 
        imagegif($dst_im,$dst);break; 
        case 2: 
        imagejpeg($dst_im,$dst);break; 
        case 3: 
        imagepng($dst_im,$dst);break; 
        case 6: 
        imagewbmp($dst_im,$dst);break; 
        default: 
        die(" Unsupported file types 2");exit; 
       } 
       imagedestroy($dst_im); 
       imagedestroy($src_im);   


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