如何在不同的文件夹中保存不同大小的不同文件

Question

if (($_FILES["fileToUpload"]["type"] == "image/gif")
  || ($_FILES["fileToUpload"]["type"] == "image/jpeg")
  || ($_FILES["fileToUpload"]["type"] == "image/png" )
   &&($_FILES["fileToUpload"]["size"] <= 100))
  {
    echo $_FILES["fileToUpload"]["size"] ;
  move_uploaded_file($_FILES["fileToUpload"]["tmp_name"],
    "C:/upload/" . $_FILES["fileToUpload"]["name"]);
  }
elseif (($_FILES["fileToUpload"]["type"] == "image/gif")
  || ($_FILES["fileToUpload"]["type"] == "image/jpeg")
  || ($_FILES["fileToUpload"]["type"] == "image/png" )
  &&($_FILES["fileToUpload"]["size"] <= 1000000))
  {
    echo $_FILES["fileToUpload"]["size"] ;
   move_uploaded_file($_FILES["fileToUpload"]["tmp_name"],
    "C:/image/" . $_FILES["fileToUpload"]["name"]);
  }

   else
  {
  echo "Files must be either JPEG, GIF, or PNG and less than 10,000 kb";
  }

but my file is getting saved only in upload folder. I want if file size is less then 100kb then it should save in upload folder else it should save in image. please help

Answer 1

Because && operator has higher precedence than ||. Use these brackets

if (($_FILES["fileToUpload"]["type"] == "image/gif"
  || $_FILES["fileToUpload"]["type"] == "image/jpeg"
  || $_FILES["fileToUpload"]["type"] == "image/png")
   && $_FILES["fileToUpload"]["size"] <= 100)

in all of your conditions. I also removed some redundant brackets, since == and <= operators have higher precedence than logical operators (except !). See also php operators precedence