registration - Errors while registrate as user --php -


i going create registration in php shows me following errors:

string(59) "insert users (username,email,password)values('','','')" duplicate entry '' key 'email'

<?php $con = mysql_connect("localhost", "user", ""); if (!$con) {     die('could not connect: ' . mysql_error()); }  mysql_select_db("university", $con);   $res = mysql_query("insert users (username, password, email) values('{$_post['uname']}', '{$_post['pwd']}', '{$_post['email']}')"); if (!$res) {      echo "mysql error ->" . mysql_error(); } else {     echo '<script type="text/javascript">alert(\'regjistrimi u krye me sukses!\')</script>'; } ?>

this form in html. cant see may wrong

<div id="containt" align="right">     <form action="<?php echo $_server['php_self']?>" method="post" id="registration_form">           <table border="0">     <tbody>      <tr>     <td><label for="name">your name*: </label> </td>     <td><input id="name" maxlength="45" name="name" type="text" /> </td>      </tr>      <tr>     <td><label for="email">email*:</label> </td>     <td><input id="email" maxlength="45" name="email" type="text" /></td>     </tr>      <tr>     <td><label for="username">username*:</label> </td>     <td><input id="username" maxlength="45" name="uname" type="text" /> </td>     </tr>      <tr>     <td><label for="password">password*:</label></td>     <td><input id="password" maxlength="45" name="pwd" type="password" /></td>     </tr>      <tr>     <td align="right"><input name="submit" type="submit" value="regjistro" /></td>     </tr>      </tbody></table>      </form>     </div>

it looks trying 1 php file? best way break php file display form , php file handle submit logic, named submit.php or similar. , in form tag's action attribute, put "./submit.php"

-or-

if set on doing in same page, wrap of submit logic inside of if...

if(isset($_post['uname'])){     // write database inside of here }

that way, writing database if there in $_post array.


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