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noob needs help with file type


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hi, i've been following the tutorials on this site for PHP and i've got the bit about filtering out files to upload. Tutorial. (sorry in advace for the long post, i don't want to leave anything out just incase)This is the example code...

<?phpif ((($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] < 20000))  {  if ($_FILES["file"]["error"] > 0)	{	echo "Error: " . $_FILES["file"]["error"] . "<br />";	}  else	{	echo "Upload: " . $_FILES["file"]["name"] . "<br />";	echo "Type: " . $_FILES["file"]["type"] . "<br />";	echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";	echo "Stored in: " . $_FILES["file"]["tmp_name"];	}  }else  {  echo "Invalid file";  }?>

The following is the code i'm using....

<?phpif ((($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] <= 50000))	{	if ($_FILES["file"]["error"] > 0)	  {		  echo "Error: " . $_FILES["file"]["error"] . "<br />";	  }	else	  {		  echo "Upload: " . $_FILES["file"]["name"] . "<br />";		  echo "Type: " . $_FILES["file"]["type"] . "<br />";		  echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";		  echo "Saved in: " . $_FILES["file"]["tmp_name"];	  }	}else	{   if (($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/pjpeg"))	  {	   echo "File too large";	  }	   else	  {	   echo "Wrong type";	  }	}?>

I wanted to give a bit more information as to why the file has been filtered out. That works fine for most files but when i try and upload an image file taken from my Nikon D50 DSLR which is a .jpg the error message goes to "Wrong type" instead of "File too large". So i added in this line below to try and debug it...

	  echo "File too large";	  }	   else	  {	   echo "Wrong type" . $_FILES["file"]["type"];	  }	}?>

The output I get from firefox and IE is just "Wrong type". So for some reason $_FILES["file"]["type"] isn't working for my DSLR pics.I was thinking about using exif_imagetype() but i'm not sure how to use it, can anybody help?cheers.

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Hi.. yes, you are right you can go that way if $_FILES["file"]["type"] is not working for some case.. check via exif_imagetype() function and using the above file-var to get type are you not getting any error?-Vijay

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i've just tried the following...

echo $_FILES["file"]["tmp_name"] . "<br />";echo $_FILES["file"]["name"] . "<br />";echo $_FILES["file"]["type"] . "<br />";echo $_FILES["file"]["size"] . "<br />";

the output when i uploaded a DSLR image wasDSC_2500.jpg0So tmp_name, type and size don't work properly, it works fine for other image files.I was thinking that i might use the exif function something like this exif_imagetype($_FILES["file"]["tmp_name"]) but the tmp_name doesn't work, can anybody give an example of how it's used?

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There's no reason why the temp name should not be filled in. PHP will save the file as a temporary file and put the filename of that file into the array, it doesn't matter what the content of the file is. Print out the $_FILES array to see what's there.print_r($_FILES);

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Have you set the enctype of your form to "multipart/form-data"? Don't know whether that will help...

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yeah this is what my form looks like

<form action="upload_file.php" method="post"enctype="multipart/form-data"><label for="file">Filename:</label><input type="file" name="file" id="file"/> <br /><br /><input type="submit" name="submit" value="Upload" /></form>

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when doing print_r($_FILES); the output is the following...Array ( [file] => Array ( [name] => DSC_1496.jpg [type] => [tmp_name] => [error] => 1 => 0 ) )
UPLOAD_ERR_INI_SIZEValue: 1; The uploaded file exceeds the upload_max_filesize directive in php.ini.
http://www.php.net/manual/en/features.file-upload.errors.php
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just had a look in my php.ini and this is what's in there

 ;Maximum size of POST data that PHP will accept.post_max_size = 8M

that's the default as of installing it, i've not edited it.edit: The .jpg files i'm testing it with don't go over 3MB.

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Well, I'm just telling you what the error says. I would trust the error. Make a file that has this:<?php phpinfo(); ?>Run it, and check which php.ini is being used, you can also check what the current running value of upload_max_filesize is on that page (I thought the default was 2MB, maybe I'm wrong).

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