I am having a problem using php to submitting a form. For some reason
PHP won't handle the form variables... I am using PHP Version 4.2.2 on
a redhat 8 system.. I used this code from a book called PHP and MySQL
Web Development.
<?php
/* the main failure in this site is that I can't seem to submit
the form properly. the variables wont' work */
session_start();
//$userid = "ant";
//$password = "ant";
/* wanted to see if this form actually received the form variables */
echo "$userid";
echo "$password";
if ($id && $password)
{
// if the user has just tried to log in
$db_conn = mysql_connect("localhost", "root", "");
mysql_select_db("test", $db_conn);
$query = "select * from auth "
."where userid='$userid' "
." and password=password('$password')";
$result = mysql_query($query, $db_conn);
if (($num_rows = mysql_num_rows($result)) > 0 )
{
echo "$num_rows";
// if they are in the database register the user id
$valid_user = $userid;
session_register("valid_user");
}
echo "$userid";
echo "$password";
}
else
{
echo "this is not working";
}
?>
<html>
<body>
<h1>Home page</h1>
<?php
if (session_is_registered("valid_user"))
{
echo "You are logged in as: $valid_user <br>";
echo "<a href=\"logout.php\">Log out</a><br>";
}
else
{ // This part fails also
if (isset($userid))
{
// if they've tried and failed to log in
echo "Could not log you in";
}
else
{
// they have not tried to log in yet or have logged out
echo "You are not logged in.<br>";
}
// provide form to log in
echo "<form method=get action=\"authmain.php\">";
echo "<table>";
echo "<tr><td>Userid:</td>";
echo "<td><input type=text name=userid></td></tr>";
echo "<tr><td>Password:</td>";
echo "<td><input type=password name=password></td></tr>";
echo "<tr><td colspan=2 align=center>";
echo "<input type=submit value=\"Login\"></td></tr>";
echo "</table></form>";
}
?>
<br>
<a href="members_only.php">Members section</a>
</body>
</html>
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