Writing to file

Anon

Hi,

I am having a problem writing to a file. I can actually get the code to write to the intended file, but it overwrites the first entry in the text file. I am not quite sure what is happening. If anyone can look this over, and offer any suggestions, that would be great..Thanks in advance.

Here is the text file before the php adds it content:

#
mike Password = "mike"
Service-Type = Framed-User,
Idle-Timeout = 1800,
Framed-Routing = None,
Framed-Filter-Id = "std.ppp"
#
dan Password = "dan"
Service-Type = Framed-User,
Idle-Timeout = 1800,
Framed-Routing = None,
Framed-Filter-Id = "std.ppp"

Here is the code I am using to add to the file.

If ($submit)
{

If (!$file=fopen("users", "r+"))
{
	echo "could not open file";
}
else
{
	If (!$fout = fgets($file,3))
	{
		echo "could not perform fgets function";
		exit();
	}

	$text = "#\n";
	$text .= "".stripslashes($user);."password = \"".stripslashes($password);."\"\n";
	$text .= "			Service-Type = Framed User,\n";
	$text .= "			Idle-Timout = 1800,\n";
	$text .= "			Framed-Routing = None,\n";
	$text .= "			Framed-Filter-Id = \"std.ppp\"\n";
	$text .= "#";
	$text .= "#\n";

	If(!$fout = fputs($file, $text))
	{
		echo "could not write to file";
		exit();
	}
	fclose($file);

}

}

And here is the text file after the php insert.

#
mike Password = "mike"
Service-Type = Framed-User,
Idle-Timeout = 1800,
Framed-Routing = None,
Framed-Filter-Id = "std.ppp"
#
Password = "dan"
Service-Type = Framed-User,
Idle-Timeout = 1800,
Framed-Routing = None,
Framed-Filter-Id = "std.ppp"

What's happening, is it adds the new entry in, but overwrites the first entry and takes out the name of the individual on the next line...?? Any suggestions?

kparker

Sure: you need to understand the file mode you are using. If all you're trying to do is append a new record to the end of the file, then use "a" mode, not "r+".

polson

A descriptive list of these modes are here :

http://www.php.net/manual/function.fopen.php

Anon

I read through the php book that I have about the different modes. I chose "r+" because the new entry needs to go at the beginning of the file..not the end. At the end their is a record that needs to be last at all times. So I chose "r+" because I could set my record at the top of the file. But like I said before, it overwrites the first entry? Thanks for your suggestions...

Anon

It's a bit of a hack, but why not read the current contents of the file into a variable, then overwrite the file entirely with the new entry, then the content you saved out?

Admittedly, not the most elegant of solutions, but it seems like it would get the job done (unless you're working with rather large files...)

-b3

Anon

Yes, that is the problem. The file is extremely large. I had thought about that at first, but the file size is huge. I need to append to the file only.... Thanks everyone so far for your help...

polson

afaik there is no way to simple prepend to a file. two options :

put oldfile into variable then copy back after new line is created.
copy old file to a temporary location, create the new file with the one line and then copy temp old file into new.

try them both and see what happens ;-)