Hi there,
I keep getting the following error message when i run this script:
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/httpd/vhosts/tellproperties.com/httpdocs/testing/register.php on line 42
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/httpd/vhosts/tellproperties.com/httpdocs/testing/register.php on line 43
No Database Selected
<?
include 'listing.php';
// Define post fields into simple variables
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$email_address = $_POST['email_address'];
$username = $_POST['username'];
$info = $_POST['info'];
/* Let's strip some slashes in case the user entered
any escaped characters. */
$first_name = stripslashes($first_name);
$last_name = stripslashes($last_name);
$email_address = stripslashes($email_address);
$username = stripslashes($username);
$info = stripslashes($info);
/* Do some error checking on the form posted fields */
if((!$first_name) || (!$last_name) || (!$email_address) || (!$username)){
echo 'You did not submit the following required information! <br />';
if(!$first_name){
echo "First Name is a required field. Please enter it below.<br />";
}
if(!$last_name){
echo "Last Name is a required field. Please enter it below.<br />";
}
if(!$email_address){
echo "Email Address is a required field. Please enter it below.<br />";
}
if(!$username){
echo "Desired Username is a required field. Please enter it below.<br />";
}
include 'join_form.html'; // Show the form again!
/* End the error checking and if everything is ok, we'll move on to
creating the user account */
exit(); // if the error checking has failed, we'll exit the script!
}
/* Let's do some checking and ensure that the user's email address or username
does not exist in the database */
$sql_email_check = mysql_query("SELECT email_address FROM users
WHERE email_address='$email_address'");
$sql_username_check = mysql_query("SELECT username FROM users
WHERE username='$username'");
$email_check = mysql_num_rows($sql_email_check);
$username_check = mysql_num_rows($sql_username_check);
if(($email_check > 0) || ($username_check > 0)){
echo "Please fix the following errors: <br />";
if($email_check > 0){
echo "<strong>Your email address has already been used by another member
in our database. Please submit a different Email address!<br />";
unset($email_address);
}
if($username_check > 0){
echo "The username you have selected has already been used by another member
in our database. Please choose a different Username!<br />";
unset($username);
}
include 'join_form.html'; // Show the form again!
exit(); // exit the script so that we do not create this account!
}
/* Everything has passed both error checks that we have done.
It's time to create the account! */
/* Random Password generator.
http://www.phpfreaks.com/quickcode/Random_Password_Generator/56.php
We'll generate a random password for the
user and encrypt it, email it and then enter it into the db. */
function makeRandomPassword() {
$salt = "abchefghjkmnpqrstuvwxyz0123456789";
srand((double)microtime()*1000000);
$i = 0;
while ($i <= 7) {
$num = rand() % 33;
$tmp = substr($salt, $num, 1);
$pass = $pass . $tmp;
$i++;
}
return $pass;
}
$random_password = makeRandomPassword();
$db_password = md5($random_password);
// Enter info into the Database.
$info2 = htmlspecialchars($info);
$sql = mysql_query("INSERT INTO users (first_name, last_name,
email_address, username, password, info, signup_date)
VALUES('$first_name', '$last_name', '$email_address',
'$username', '$db_password', '$info2', now())")
or die (mysql_error());
if(!$sql){
echo 'There has been an error creating your account. Please contact the webmaster.';
} else {
$userid = mysql_insert_id();
// Let's mail the user!
$subject = "Your Membership at MyWebsite!";
$message = "Dear $first_name $last_name,
Thank you for registering at our website, http://www.mydomain.com!
You are two steps away from logging in and accessing our exclusive members area.
To activate your membership,
please click here: http://www.mydomain.com/activate.php?id=$userid&code=$db_password
Once you activate your memebership, you will be able to login
with the following information:
Username: $username
Password: $random_password
Thanks!
The Webmaster
This is an automated response, please do not reply!";
mail($email_address, $subject, $message,
"From: MyDomain Webmaster<[EMAIL="admin@mydomain.com>\n"]admin@mydomain.com>\n[/EMAIL]
X-Mailer: PHP/" . phpversion());
echo 'Your membership information has been mailed to your email address!
Please check it and follow the directions!';
}
?>and this is my listing.php file:
<?php
# FileName="Connection_php_mysql.htm"
# Type="MYSQL"
# HTTP="true"
$hostname_listing = "localhost";
$database_listing = "listing";
$username_listing = "admin";
$password_listing = "helpme";
$listing = mysql_pconnect($hostname_listing, $username_listing, $password_listing) or trigger_error(mysql_error(),E_USER_ERROR);
?>when i comment out line 42 and 43 i just get left with No database selected.
If anyone can tell me what is wrong i would really appreciate it, i´m trying to learn how to make a membership system in dreamweaver using php and mysql.
thanks in advance for your help.
MsKazza
