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Checking duplicate user in a DATABASE?


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Hello bilis
Anyways, I ran into this problem myself, but now I can provide you with the answer  :D
$query  = "SELECT username FROM users WHERE username='$username'";
$result = mysql_query($query);
$checkUsername = mysql_fetch_array($result);

if!isset($checkUsername['username']){ //if the username is not taken
//do something
} else {
//report error
Hope this helps
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"[font=Verdana][u][b]i would like to check a user duplicate inside a MySQL database.[/b][/u][/font]"

Guys , what if i want to get count +  user name that have duplcate entry through a sql  query with out providin any $username

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xec now your obsetly making it difficult, you need the where clausule otherwise you can not check where something is equal/duplicate

$query = "SELECT `username`, COUNT(`username`) AS `DuplicateEntries` FROM `users` WHERE `username`='$username'";// will possibly not work... therefore rather use:
$Query = mysql_query("SELECT `username` FROM `users` WHERE `username`='$username'");
$Rows = count(mysql_fetch_array($Query));
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