Read form data?

Anon

Sorry, total PHP newb here.

How do I read a posted form element so I can delete the file based on the posted file name?

Here is my code. My posted form item's name is "hdnFile". However, my variable $file is not being set to the posted form item.

<?
$file = $hdnFile;
unlink($file);
echo "<p><center>You have <font color='#ff0000'>succesfully</font> deleted <b>$file</b>.</center></p>";
?>

dalecosp

Well, not too much to go on here as I'm
also a newbie. Check everything --- spelling, code format, etc. If the
following doesn't work, then I'm stumped...

HTML Form for file delete

<FORM ACTION="script.php" METHOD=POST>
File to delete:
<INPUT TYPE=TEXT NAME="DelFile" SIZE=30><BR>
<INPUT TYPE=SUBMIT NAME="SUBMIT" VALUE="Delete this file?">
</FORM>

########### script.php ############

<?php

echo "the file to be deleted is $DelFile";

#######################################

This should at least allow you to know
if you are receiving the variable from
the form, and hacks like this are
commonly used for debugging (I have lines
"echo $var;" commented out all over the
place in my scripts.....

HTH, KDK

Anon

If the file is not in the same folder as the script you have to specify the path to the file.

eg.
unlink("./images/$file");
or,
unlink("/home/name/www/images/$file");

Also check if the file exists:

if (file_exists(./images/$file)) {
unlink("./images/$file");
echo "File deleted succesfully\n";
}
else {
echo "File not deleted, does not exist";
}

To avoid php generated errors if not sucesfull, try put @ before the unlink function

eg. @unlink();

regards
Thomas

yurko

if in form you have
<input type="text" name="file_to_b_killed">
then inside your script you will have variable $file_to_b_killed which is set to value of that textbox. Usually it works. if it doesnt then use $POST["file_to_b_killed"]
or $GET["file_to_b_killed"] depending on your form's method.

dalecosp

Hey, thanks for that, Yuri,
from the 2nd newbie here...

$_POST is equivalent to old
$HTTP_POST_VARS, correct?

---KDK

yurko

correct.
$POST was $HTTP_POST_VARS
$GET was $HTTP_GET_VARS