PHP+file handling+confused???

**shachi** · 07-09-2006, 07:21 PM

Hello everyone,
I am learnt PHP file handling and plain text database manipulation and I am trying to make a authentication system with plain text database(comma seperated values) the thing which is bugging me is that one can create a user but cannot update h(is/er) profile neither can he delete his username. I have been trying to make it work for a long time now and I finally think I cannot do it on my own. I seek for help and any help would be greatly appereciated. Thank you for your time reading this thread.

**shachi** · 07-10-2006, 03:53 PM

Any help here would be greatly appereciated.

**Twey** · 07-10-2006, 03:55 PM

You haven't given enough information for anyone to help you.

**shachi** · 07-10-2006, 04:11 PM

Ok. Here is my description. I have three pages: createuser.php, updateprofile.php and deleteuser.php. They all share a common flat file database(not quite flat) which is database.php which looks like this:

PHP Code:


<?php exit(); ?>

#stores users in

#comma seperated

#values.

#format: username,password,email,zip,country

createuser.php looks something like this:

PHP Code:


<html>

<head>

</head>

<body>

<form name="testform" action="testcreate.php" method="POST">

UserName:<input type="text" name="name">

Email:<input type="text" name="email">

Password:<input type="text" name="password">

Zip:<input type="text" name="zip">

Country:<input type="text" name="country">

<input type="submit">

</form>

</body>

</html>

It gets to another file testcreate.php which stores the data using post to the file database.php. testcreate.php looks like this:

PHP Code:


<?php

$handle = fopen('database.php', 'a');

fwrite($handle, $_POST['name'].",".$_POST['password'].",".$_POST['email'].",".$_POST['zip'].",".$_POST['country']."\n");

fclose($handle);

echo "Please click <a href='login.php'>here</a> to go to the login page."

?>

This stores the data.

The deleteuser.php looks like this:

PHP Code:


#source php.net

<?

$key = $_POST["username"];

$fc=file("database.php");

$f=fopen("database.php","w");

foreach($fc as $line)

{

     if (!strstr($line,$key))

           fputs($f,$line);

}

fclose($f);

?>

The $_POST["username"] comes from a page deleteuser.html.

The problem I am having is I couldn't make a script to edit the profile of the user.

I need a script(descripted I am learning PHP not copying) which could let the users update their profile in the flat file database.

I hope I was able to clear my point.
Thanks.

**Twey** · 07-10-2006, 04:40 PM

Well, you should create a function that loops through the lines, looks for the supplied username, reads in the information to an array (explode() will help you here), constructs a new line from that data and the new data provided, then deletes the old line and inserts the new one.

It would have been so much easier to write a demo script.

**shachi** · 07-10-2006, 04:54 PM

Umm, I hate to admit it Twey but I have not yet studied about the explode() function and I wish you could give me some hints on doing so. I am just a beginner you remember??

I can create a function that loops through the file and looks for the supplied username(it's similar to the delteuser.php isn't it??) but how do I read the information into an array and construct a new line from the data and add the new data provided and delete the old line??

EDIT: By the way I just realized the explode() contained a link. Going through it.

**Twey** · 07-10-2006, 04:55 PM

That's why I gave you the link

**shachi** · 07-10-2006, 05:12 PM

Yep went through it. Isn't explode() something like split()??

**Twey** · 07-10-2006, 05:13 PM

Similar, but no regex, just a simple seperator string.

**shachi** · 07-10-2006, 05:29 PM

Now how do I do this part??

Originally Posted by Twey

reads in the information to an array (explode() will help you here), constructs a new line from that data and the new data provided, then deletes the old line and inserts the new one.

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