Hello,
I created a form to upload files. The formfield contents are stored as
records in an Ascii file "data.dat"; for reasons I am not using a
MySql database.
The upoaded file itself is stored in a directory called "files".
With an administration form I can read all contents of the data.dat
file and select records to delete (one at a time).
So far so good.
Now in one of the record fields the uploaded filename is stored.
To add some new functionality I will not only delete the record but
also delete the specific file mentioned in the filename field.
To realise this I use the standard PHP function unlink(). To extract
the needed filename from the selected record I use the PHP function
explode(); fields are seperated with "|".
By using the explode() function I can select the wanted filename in
this record with the correct array value.
for($i=0;$i<sizeof($records);$i++) //Part of code that writes all
the records back to the data.dat file
{
if($i!=$id) //$id is the value of the choosen record to
delete
fwrite($file,$records[$i]); //write unselected records to data.dat
else // extract the wanted filename in specific record
{
$columns = explode("|",$records[$id]);
//$filename = "TryMe.txt"; //Alternative used for testing
$filename = $columns[sizeof($columns)-1];
echo "$filename"; //echo to screen for testing
if(unlink("../files/$filename"))
echo "The file $filename is succesfully deleted";
//echo to screen for testing
}//else
}//for
Now the problem:
Running this code -in the else loop- the unlink function generates
an error. However the echo displays the correct filename on the
screen.
The oddest thing is when I seperately copy a testfile named TryMe.txt
into the files directory and then run the same code using $filename =
"TryMe.txt" instead of $filename = $columns[sizeof($columns)-1];
things work fine. The result is that echo displays the correct
filename and the
file TryMe.Txt is deleted from the ../files directory!!
(To activate code I then choose a random record to delete in the
administration.)
Summarized:
$filename = "TryMe.txt"; - unlink runs fine
ref. screen output: echo, echo:
===============================================
.../files/TryMe.txtThe file TryMe.txt is succesfully deleted
===============================================
$filename = $columns[sizeof($columns)-1]; - unlink generates error.
ref. screen output: echo, Warning:
================================================
.../files/10_16_40_boef.gif
Warning: unlink() failed (Invalid argument) in c:\program
files\....\admin\delete_file_rec.php on line 43
=================================================
Is there anybody who can help me out and give me a clue??
Thanks in advance.....
