Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Your problem lies with the SQL to check for duplicate usernames.</p> <pre><code>// Check for existing username $sql = "SELECT * FROM `members`"; $result2=mysql_query($sql); while($row=mysql_fetch_array($result2)){ $username2 = $row['username']; ... }} </code></pre> <p>I have taken your code, and made some minor changes. I have changed your SQL query to retrieve a count of users with the same username, instead of returning every username to check individually.</p> <p>I have also taken the code around the <code>mail()</code> function out of a loop. If no duplicate usernames have been found, the <code>$duplicateUsername</code> variable is set to false, otherwise its set to true.</p> <p>If <code>$duplicateUsername</code> is false, then the mail function is called... once, otherwise the error is displayed.</p> <p>Please everything from <code>// Check for existing username</code> with the following:</p> <pre><code>// Check for existing username $username = mysql_real_escape_string($username); $duplicateUsername = false; $sql = "SELECT COUNT(username) AS usernameCount FROM members WHERE username = '{$username}'"; $result2=mysql_query($sql); while($row=mysql_fetch_array($result2)){ $duplicateUsername = $row['usernameCount']&gt;0 ? true : false; } if(!$duplicateUsername){ $sql = "INSERT INTO `members` (`id`, `first_name`, `last_name`, `email`, `username`, `password`, `termsofuse`, `status`, `approved`, `acctype`, `industry`, `newsletter`, `contactnumber`, `hash`, `since`) VALUES (NULL, '$first_name' , '$last_name' , '$email' , '$username' , '$password1' , '$termsofuse', 'Reg', '$approved', '$acctype', '$industry', '$newsletter', '$contactnumber', '$hash', NOW())"; $result = mysql_query($sql) or die ("Can't insert".mysql_error()); $to = $email; // Send email to user $subject = 'Signup Verification'; //Subject line in email $message = 'Welcome ' . $first_name . ',' . "\r\n\r\n" . 'Thanks for signing up!' . "\r\n\r\n" . 'Your account has been created. To activate your account, click on the link below to get started!' . "\r\n\r\n" . 'http://www.radioman911.com/pages/CAD/verify.php?email=' . $email . '&amp;hash=' . $hash . ''; $headers = 'From: xxxx' . "\r\n" . 'Reply-To: same xxxx as above' . "\r\n" . 'X-Mailer: PHP/' . phpversion(); mail($to, $subject, $message, $headers, '-fxxxx same as above'); header("location:new_member_sucess.php"); } else { echo "&lt;style type='text/css'&gt;A{text-decoration:none}&lt;/style&gt;"; echo "&lt;body bgcolor='black'&gt;&lt;font color='white' style='font-family:trebuchet ms;'&gt;"; echo "Passwords do not match or that username is already taken, please try again!&lt;br&gt;"; echo "&lt;a href='javascript: history.go(-1)'&gt;&lt;font color='red'&gt;Go back&lt;/a&gt;&lt;/font&gt;"; } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POphp mail() sending multiple duplicate emails
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USPhil Cross
    1. USPhil Cross
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POphp mail() sending multiple duplicate emails
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    1. COPhil - Thanks very much! However, after implementing your changes, mysql_fetch_array() expects parameter 1 to be resource, boolean given .... In addition, it doesn't like the header being at the bottom anymore (which it didn't care before)
      singulars
      1. PO
      1. USTim
    2. CO@Tim sorry, I made a mistake in the SQL! I forgot to enclose `{$username}` in quotes. I have updated the SQL statement so it should work now. It wouldn't like the header at the bottom because text has already been sent to the browser, but the SQL fix should resolve this issue as well :)
      singulars
      1. PO
      1. USPhil Cross
    3. COOh okay. I have not seen the `{$username}` style before - is it older, newer, better, or...?
      singulars
      1. PO
      1. USTim
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload