conditions on upload

[Anon]

hi sory about my english

i have a form that sending s files:

<form action="add_picture_db.php" method="post" enctype="multipart/form-data">
small file <input type="file" name="small_f">
larg file <input type="file" name="larg_f">
<input type="submit">
</form>
/// simple ! ! !

now, i'm tring at the 'add_picture_db' page
to confirm some things about the files, like
if both of them were sent, or if the small one is larger then the larg one.
any way some conditions before I upload them.
this is the conditions:

if(isset($small_f_name) and isset($larg_f_name))
{
if(($small_f_size < $larg_f_size))
{
print $small_f_name." can be upload<br>";
print $larg_f_name." can be upload<br>";
}

else {print "the small file cannot be larger than the larg file";}
}
else {print "u must upload 2 files";}

<end script>

now, even the isset function doesnt goes well
can u tell me what is wrong?

please try to expline it to me eazily, because of my bad english, thanks a lot,
avi

[mkarabulut]

To examine the filesizes you should use a function and you better use is_uploaded_file instead of isset , check it out:

if(is_uploaded_file($small_f_name) and is_uploaded_file($larg_f_name))
{
if((filesize($small_f_size) < filesize($larg_f_size)))
{
print $small_f_name." can be upload<br>";
print $larg_f_name." can be upload<br>";
}
else {print "the small file cannot be larger than the larg file";}
}
else {print "u must upload 2 files";}
<end script>

[Anon]

the function is_uploaded_file() can be use after uploading or after using the copy() function.

but in my case i want to confirm those things before uploading.

i tried your script it doesnt work, i sent 2 files and the error "u must upload 2 files" is working(shown).
can u try it at your place?
ang try to debug it? i just tried without any resuolts.
thanks lot
avi.

[mkarabulut]

Please check your knowledge about is_uploaded_file. You better examine the manual. But let me remind:
1-All files is uploaded to your temp folder in any case firstly. And $large_file is actually includes the filename and temp folder name such as
c:\windows\temp\fileul12324asd.asasd
2-You don't need to copy the file firstly, cause it was copied to the temp fold indeed.Your is_uploaded_file check is performed for the copy of the file in the temp folder.

and sorry for the bugs. here is new one.

if(is_uploaded_file($small_f) and is_uploaded_file($larg_f))
{
if(filesize($small_f) < filesize($larg_f))
{
print $small_f_name." can be upload<br>";
print $larg_f_name." can be upload<br>";
}
else {print "the small file cannot be larger than the larg file";}
}
else {print "u must upload 2 files";}

good luck
cheers