恒富网

function CreateThumbs($image_path,$thumb_width,$thumb_height,$thumb_pro,$thumb_path,$ml=1,$thumb_quality=100){
   if ($thumb_path!=''){
   /*
   $thumb_array=explode('/',$thumb_path);
   if (count($thumb_array)>=2){
      $thumb_parent='';
      if ($ml==1) $thumb_parent='../';
      $thumb_dir=$thumb_parent.$thumb_array[0].'/'.$thumb_array[1].'/';
      if (is_date($thumb_array[1]) && !is_dir($thumb_dir)) mkdir($thumb_dir);
   }
   */
   if ($ml==1){
      $image_path='../'.$image_path;
      $thumb_path='../'.$thumb_path;
   }
   $image_size=getimagesize($image_path);
   switch($thumb_pro){
   case 1:
      $image_width=$image_size[0];
      $image_height=$image_size[1];
      if ($image_size[0]>$thumb_width && $image_size[1]>$thumb_height){
         $image_width=$image_size[0]/$image_size[1]*$thumb_height;
         $image_height=$thumb_height;
         if ($image_width>$thumb_width){
            $image_width=$thumb_width;
            $image_height=$image_size[1]/$image_size[0]*$thumb_width;
         }
      }
      elseif($image_size[0]>$thumb_width && $image_size[1]<=$thumb_height){
         $image_width=$thumb_width;
         $image_height=$image_size[1]/$image_size[0]*$thumb_width;
      }
      elseif($image_size[1]>$thumb_height && $image_size[0]<=$thumb_width){
         $image_width=$image_size[0]/$image_size[1]*$thumb_height;
         $image_height=$thumb_height;
      }
      break;
   case 2:
      $image_width=$thumb_width;
      $image_height=$image_size[1]/$image_size[0]*$thumb_width;
      if ($image_size[0]<$thumb_width){
         $image_width=$image_size[0];
         $image_height=$image_size[1];
      }
      break;
   case 3:
      $image_width=$image_size[0]/$image_size[1]*$thumb_height;
      $image_height=$thumb_height;
      if ($image_size[1]<$thumb_height){
         $image_width=$image_size[0];
         $image_height=$image_size[1];
      }
      break;
   default:
      $image_width=$thumb_width;
      $image_height=$thumb_height;
      break;
   }
   switch($image_size[2]){
   case 1: //gif
      $image_path=imagecreatefromgif($image_path);
      break;
   case 2: //jpg
      $image_path=imagecreatefromjpeg($image_path);
      break;
   case 3: //png
      $image_path=imagecreatefrompng($image_path);
      imagesavealpha($image_path,true);
      break;
   case 6: //bmp
      break;
   }
   $image=imagecreatetruecolor($image_width,$image_height);
   if ($image_size[2]==3){
      imagealphablending($image,false);
      imagesavealpha($image,true);
   }
   else{
      $color=imagecolorallocate($image,255,255,255);
      imagefill($image,0,0,$color);
   }
   imagecopyresampled($image,$image_path,0,0,0,0,$image_width,$image_height,$image_size[0],$image_size[1]); 
   switch($image_size[2]){
   case 1: //gif
      imagegif($image,$thumb_path,$thumb_quality); 
      break;
   case 2: //jpg
      imagejpeg($image,$thumb_path,$thumb_quality); 
      break;
   case 3: //png
      imagepng($image,$thumb_path);
      break;
   case 6: //bmp
      break;
   }
   imagedestroy($image); 
   }
}