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Javascript for Userid and password Validation. You can put this code on head tag of html code.
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<![CDATA[
<script language="javascript">
function validation (myform)
{
if(myform.userid.value =="")
{
alert("Enter UserName");
myform.userid.focus();
return false;
}
if(myform.password.value == "")
{
alert("Enter Password");
myform.password.focus();
return false;
}
return true;
}
</script>
]]>
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Inside Body tag:
<![CDATA[
<form name="frmLogin" method="post" onSubmit="return validation(this)" >
<table align="center">
<th align="center" colspan="2"> <font size="+1" >Login</font></th>
<tr>
<td>User Name</td>
<td><input type="text" name="userid" /></td>
</tr>
<tr>
<td>Password</td>
<td><input type="password" name="password" /></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" name="login" value="Submit" /></td>
</tr>
</table>
</form>
<?php
if($_POST['login']!='')
{
$SelQuery = "Select * from login Where userid = '".trim($_POST['userid'])."'
AND password ='".trim($_POST['password'])."' ";
$SelResult = mysql_query($SelQuery,$Link);
$rec=mysql_fetch_assoc($SelResult);
if(trim($rec['userid']) == trim($_POST['userid']) &&
trim($rec['password']) == trim($_POST['password']) && trim($rec['user_type']) =="Admin")
{
$_SESSION['userid']=trim($_POST['userid']);
?>
<!--if it is correct data, then the page redirect to admin_index.php page-->
<script language="javascript">
window.location.href="admin_index.php";
</script>
<?php
}
else
echo "Invalid User Id Or Password";
}
?>
]]>
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