PHP application using flat file

[tbucknall]

Hi there!

I am wondering if anyone can assist my on creating a simple php script for creating, modifying and deleting users with PHP ONLY. No MySQL. I am quite new to PHP. I need it to be so that only an administrtaor can make those changes and visitors only have a log in page and home page.

 

So far i only have the register and login working. I want to know how i can set up so an adminstrator can modify the users.

 

thanks.

 

this is the register script:

 

<?php

echo "password1 ".$_POST['password'];
echo "<br>";
echo "password2 ".$_POST['password2'];
echo "<br><br>";


if (isset ($_POST['submit'])) {
$problem = FALSE;
if (empty ($_POST['username'])) {
$problem = TRUE;
print "Please enter a username!";
}
if (empty ($_POST['password'])) {
print "Please go back and enter a password" ;
exit;
}
if (empty ($_POST['password2'])) {

print "Please go back enter your password in each box.";
exit;
}
if (($_POST['password'])!==($_POST['password2']))
{
print "Your password entries did not match! Please go back and correct them.";
exit;
}

$fp = fopen ( 'users.txt', 'rb' );
while ($line = fgetcsv($fp,100,",")) {
echo $line[0]."  ".$line[1];
echo "<br>";
if ( ($line[0] == $_POST['username']) ) {
echo "<b>Sorry! That username is already being used. Please go back and select another name.</b>";
fclose ( $fp );
exit;
}
}


$fp=fopen('users.txt', 'ab' );
//$data =($_POST['username']).crypt($_POST['password']);
$data =($_POST['username']).",".($_POST['password'])."\r\n";


fwrite ( $fp, $data );
fclose ( $fp );
print "You are now registered!";
}
exit;
?>

 

and this is the login:

<?php
//debug
echo $_POST['username'];
echo "<br>";
echo $_POST['password'];
echo "<br>";
// end debug

if (isset ($_POST['submit'])) {
$loggedin = FALSE;
$fp = fopen ( 'users.txt', 'rb' );
while ($line = fgetcsv($fp,100,",")) {
echo $line[0]."  ".$line[1];
echo "<br>"; //debug
if ( ($line[0] == $_POST['username']) AND ($line[1] == ($_POST['password']) ) ) {
$loggedin = TRUE;
echo "line 24 <br>"; //debug
//break;
}
}
if ($loggedin) {
print '<br>Username and Password are correct.';
exit;
} else {
print '<br>The username and password did not match!';
}
}
?>
<form action="login.php" method="post">
Username: <input type="text" name="username">
<br /><br />
Password: <input type="password" name="password">
<br /><br />

<input type="submit" name="submit" value="Login">
</form>