undefined offset

[Anon]

I get error in next part of my script:
$filename = "text.php";
$fileAr= file($filename);
exec("cat /dev/null > $filename");
$fd = fopen( $filename, "a+" );
$filemessage = "<font color=$color><B><a href=\"javascript:launcher('profile.php?username=$username');\">$username</a> entered at $date</b></font><br><hr size=1 noshade>\n";
fwrite($fd,$filemessage);

                            $numLines = 20;
                            for ($i=0;$i<$numLines;$i++) {
                                    fwrite($fd,$fileAr[$i]);
                            }
                            fclose( $fd );

Undefined offset: 2 in.........
Undefined offset: 3 in.........
...............................
Undefined offset: 19 in........
Please HELP
Write me at [e-mail]
Thanks

[[deleted]]

This is not a forum where we email you personally with the answer.
The forum software automatically sends replies to your address,
but if you want help, you'll have to come to the forum and read it.

$fileAr= file($filename);
exec("cat /dev/null > $filename");

...and how many lines do you think /dev/null contains?
in other words, the file in $filename is empty.

Error checking is everything.
Why do you assume you have 20 lines?
Why don't you do count($fileAr) and see exactly how many lines you really have?

[Anon]

Dear Vincet,
Nothing change
I get same error in next part of my script:
if ($option == "chat"):

                            if (!file_exists("text.php")):
                                    exec("touch text.php");
                            endif;

                            $date = date("h:ia d M");

                            $filename = "text.php";
                            $fileAr= file($filename);
                            exec("cat /dev/null > $filename");
                            $fd = fopen( $filename, "a+" );
                            $filemessage = "<font color=$color><B><a href=\"javascript:launcher('profile.php?username=$username');\">$username</a> entered at $date</b></font><br><hr size=1 noshade>\n";
                            fputs($fd,$filemessage);

                            $numLines = 20;
                            for ($i=0;$i<$numLines;$i++) {
                                    fputs($fd,$fileAr[$i]);
                            }
                            fclose( $fd );

                            touch("userlist/".$username);

Undefined offset: 1 in.........
Undefined offset: 2 in.........
...............................
Undefined offset: 19 in........

If wont and can Please HELP.

Thanks
Tzetzo

[[deleted]]

You are still opening empty files, and you are still not checking how many lines there are in the file you opened.

this:
if (!file_exists("text.php")):
exec("touch text.php");
endif;

Creates an empty file.

this
$numLines = 20;
for ($i=0;$i<$numLines;$i++)
{
fputs($fd,$fileAr[$i]);
}
fclose( $fd );

will try to write 20 lines, BUT does not check if there are 20 lines it CAN write.

[Anon]

Hello
Now Ihave new problem:
Fatal error: Call to undefined function: dbmopen() in d:\apache\htdocs\ch\reg.php on line 84

Fatal error: Call to undefined function: dbmexists() in d:\apache\htdocs\ch\reg.php on line 88

Fatal error: Call to undefined function: dbmexists() in d:\apache\htdocs\ch\reg.php on line 91

Haw I can define these functions?
Please Help.
Best Regards
Tzetzo

[[deleted]]

You PHP version doesn't support DBM functions.

Read this
http://www.php.net/manual/en/ref.dbm.php

and this:
http://www.php.net/manual/en/install.configure.php
search for --with-dbm