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i had a users page in which the Admin can add users.so while adding a user i am able to restrict the duplicate entries(same names).Those users will be displayed in a table, and there is a edit button, so Admin can edit users account(like active,inactive etc). here is my problem when i click on edit button a pop up wil open and i didnt change any thing and click update button, as i didnt change anything it should update but i am getting a popup as user already exist. so can any one...
Thanks in advance..
here is my code
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- <html>
- <body>
- <?php
- $id=$_GET['f1'];
- include 'connection.php';
- $query="select * from users where userid='$id'";
- mysql_error();
- $result = mysql_query ($query) ;
- $num=mysql_num_rows($result);
- $i=0;
- While($i < $num)
- {
- $userid=mysql_result($result,$i,"userid");
- $sqlusername=mysql_result($result,$i,"username");
- $password=mysql_result($result,$i,'password');
- $role=mysql_result($result,$i,"role");
- $status=mysql_result($result,$i,'status');
- $allocatedmemory=mysql_result($result,$i,"allocatedmemory");
- $arr_id=split("[{ }-]" ,$allocatedmemory);
- $i++;
- }
- ?>
- <form action="update.php" method="post">
- <div>
- <center>
- <table>
- <tr>
- <td style="color: navy;">Userid</td>
- <td><input type="text" readonly="readonly" name="userid" value="<? echo $userid; ?>"></td>
- </tr>
- <tr>
- <td style="color: navy;">Username</td>
- <td><input type="text" name="username" id="txtname" value="<? echo $sqlusername; ?>"></td>
- </tr>
- <tr>
- <td style="color: navy;">Password</td>
- <td><input type="password" name="password" id="pwd" value="<? echo $password; ?>"></td>
- </tr>
- <tr>
- <td style="color: navy;">Status:</td>
- <td><select name="status">
- <?php
- if($status == 1)
- {
- echo '<option value="Active" selected="selected">Active</option>';
- echo '<option value="Inactive">Inactive</option>';
- }
- else
- {
- echo '<option value="Inactive" selected="selected">Inactive</option>';
- echo '<option value="Active">Active</option>';
- }
- ?>
- </select></td></tr>
- <tr>
- <td style="color: navy;">Allocatedmemory</td>
- <td><input type="text" onkeypress="return isNumberKey(event)" id="am" name="allocatedmemory" value="<? echo $arr_id[0]; ?>"></td>
- <td><select name="size">
- <?php
- if($arr_id[1]== "KB")
- {
- echo '<option value="MB">MB</option>';
- echo '<option value="KB" selected="selected">KB</option>';
- }
- else
- {
- echo '<option value="MB" selected="selected">MB</option>';
- echo '<option value="KB">KB</option>';
- }?>
- </select>
- </td>
- </tr>
- <tr>
- <td></td>
- <td><input type="submit" name="btn" value="Update" onclick="return (confirm('Are you sure you want to Update this?'),check())"/>
- <input type="submit" name="btn" value="Delete" onclick="return (confirm('Are you sure you want to delete this?'))"/></td>
- </tr>
- </table>
- </center>
- </div>
- </form>
- </body>
- </html>
- <?php
- $user=$sqlusername;
- echo $user;
- if(isset($_POST['btn']))
- {
- include 'connection.php';
- if($_POST[btn]== 'Update')
- {
- $pname=$_POST['username'];
- if($_POST[status] == 'Active')
- $_POST[status] = 1;
- else{
- $_POST[status] = 0;
- }
- echo $pname;
- if($user==$pname)
- {
- mysql_query("UPDATE users SET username = '$_POST[username]',password = '$_POST[password]', role = '1', status = $_POST[status], allocatedmemory = '$_POST[allocatedmemory] $_POST[size]' WHERE userid = '$_POST[userid]'");
- echo "<script language='javascript'>
- alert('User details updated');
- </script>";
- echo "<script language='javascript' type='text/javascript'>
- window.close();
- </script>";
- }
- else{
- $query="select * from users where username='$pname'";
- mysql_error();
- $result=mysql_query($query);
- $count=mysql_num_rows($result);
- if($count==0)
- {
- mysql_query("UPDATE users SET username = '$_POST[username]',password = '$_POST[password]', role = '1', status = $_POST[status], allocatedmemory = '$_POST[allocatedmemory] $_POST[size]' WHERE userid = '$_POST[userid]'");
- }
- else
- {
- echo "<script language='javascript'>
- alert('Username already exists');
- </script>";
- }
- }
- }
- else if($_POST[btn] == 'Delete')
- {
- mysql_query("Delete from users where userid ='$_POST[userid]'");
- echo "<script language='javascript'>
- alert('Data Deleted');
- </script>";
- echo "<script language='javascript' type='text/javascript'>
- window.close();
- </script>";
- }
- }
- ?>
