file upload help

[orangge]

Dear All,

      I have encountered some problems when i was doing some testing for the file upload. I found tat if the size of the graphic file is exactly 40kb, it won't be able to be uploaded even though i have set the size of the file to be uploaded not more than or equal to 40kb. Another problems i have encountered when i was tried to upload some .bmp files, some .bmp files were able to be uploaded and some weren't. It's not suppose to be happened because i have set the condition only allowed .jpeg, .gif and png files to be uploaded. I hope someone can help me. Thanks.

 

Below are the codes:

 

<?php

if ((($_FILES["image"]["type"] == "image/gif")

|| ($_FILES["image"]["type"] == "image/jpeg")

|| ($_FILES["image"]["type"] == "image/pjpeg")

|| ($_FILES["image"]["type"] == "image/png"))

&& ($_FILES["image"]["size"] <= 40000)){

 

  if ($_FILES["image"]["error"] > 0)

    {

    echo "Return Code: " . $_FILES["image"]["error"] . "<br />";

    }

  else

    {

    echo "Upload has been successful.";

 

    if (file_exists("upload/" . $_FILES["image"]["name"]))

      {

      echo $_FILES["image"]["name"] . " already exists. ";

      }

    else

      {

      move_uploaded_file($_FILES["image"]["tmp_name"],

      "upload/" . $_FILES["image"]["name"]);

      }

    }

  }

else

  {

  echo "Error.";

  }

?>

[anups]

40kb = 40*1024 = 40960

 

for file size use following code

($_FILES["image"]["size"] <= 40960))

 

for image type use following

 

try function exif_imagetype 

http://in.php.net/manual/en/function.exif-imagetype.php

 

[orangge]

40kb = 40*1024 = 40960

 

for file size use following code

($_FILES["image"]["size"] <= 40960))

 

for image type use following

 

try function exif_imagetype 

http://in.php.net/manual/en/function.exif-imagetype.php

 

 

I have modified the code and tested with two bmp files. But one bmp file is working and the other is not working. Below is the code:

 

<?php

if ((($_FILES["image"]["type"] == "image/gif")

|| ($_FILES["image"]["type"] == "image/jpeg")

|| ($_FILES["image"]["type"] == "image/pjpeg")

|| ($_FILES["image"]["type"] == "image/png")

|| (exif_imagetype($_FILES["image"]["name"]) != IMAGETYPE_BMP))

&& ($_FILES["image"]["size"] < 40960)){

 

  if ($_FILES["image"]["error"] > 0)

    {

    echo "Return Code: " . $_FILES["image"]["error"] . "<br />";

    }

  else

    {

    echo "Upload has been successful.";

 

    if (file_exists("upload/" . $_FILES["image"]["name"]))

      {

      echo $_FILES["image"]["name"] . " already exists. ";

      }

    else

      {

      move_uploaded_file($_FILES["image"]["tmp_name"],

      "upload/" . $_FILES["image"]["name"]);

      }

    }

  }

else

  {

  echo "Error.";

  }

?>