0

How to solve this error (session_start(): Cannot send session cache limiter - headers already sent (output started at /opt/lampp/htdocs/hrms/header.php:140))? This is login page.

Logs:

PHP Warning:  session_start(): Cannot send session cache limiter - headers already sent (output started at /opt/lampp/htdocs/hrms/header.php:140) in /opt/lampp/htdocs/hrms/index.php on line 74

PHP Warning:  Cannot modify header information - headers already sent by (output started at /opt/lampp/htdocs/hrms/header.php:140) in /opt/lampp/htdocs/hrms/index.php on line 82

line 74:

session_start();

line 82: 

header('location:home.php');

Page:

<?php include('dbcon.php');include('header.php');?>
<body>
<?php include('nav-top1.php'); ?>
<div class="wrapper">

</br>
</br>
</br>
</br>
</br>
</br>
</br>
<div id="element" class="hero-body-index">
    <div class="alert alert-info">
    <p><font color=""><h2>Login</h2></font></p>
    Enter the details to login your account
    </div>

    <hr>
    <form method="POST" >
    <table>
    <tr><td><font color="">UserName:</font>&nbsp;&nbsp;</td><td><input type="text"  name="UserName" class="UserName_hover"></td></tr>
    <tr><td>...<td></tr>
    <tr><td><font color="">Password:</font>&nbsp;&nbsp;</td><td><input type="Password" name="Password" class="Password_hover"></td></tr>
    <tr><td>...<td></tr>
    <tr><td></td><td>   <button class="btn btn-primary btn-large" name="Login"><i class="icon-ok-sign icon-large"></i>&nbsp;Login</button></td></tr>
    <tr><td>
    </td><tr>
    </form>
    </table>

    </br>
    <div class="error">
    <?php

if (isset($_POST['Login'])){

$UserName=$_POST['UserName'];
$Password=$_POST['Password'];

$login_query=mysql_query("select * from user where UserName='$UserName' and Password='$Password' and User_Type='Admin'");
$count=mysql_num_rows($login_query);

$login_query1=mysql_query("select * from user where UserName='$UserName' and Password='$Password' and User_Type='User'");
$count1=mysql_num_rows($login_query1);



$row1=mysql_fetch_array($login_query1);
$f=$row1['FirstName'];
$l=$row1['LastName'];

$row=mysql_fetch_array($login_query);
$f=$row['FirstName'];
$l=$row['LastName'];





if ($count1 == 1){
session_start();
$_SESSION['id']=$row1['User_id'];
$_SESSION['User_Type']=$row1['User_Type'];
$type=$row1['User_Type'];

mysql_query("INSERT INTO history (data,action,date,user)VALUES('$f $l', 'Login', NOW(),'$type')")or die(mysql_error());


header('location:home_user.php');
}

if ($count > 0){
session_start();
$_SESSION['id']=$row['User_id'];
$_SESSION['User_Type']=$row['User_Type'];
$type=$row['User_Type'];

mysql_query("INSERT INTO history (data,action,date,user)VALUES('$f $l', 'Login', NOW(),'$type')")or die(mysql_error());


header('location:home.php');
}else{
?>
    <div class="alert alert-error">
    <button class="close" data-dismiss="alert">Ч</button>
   Please check your UserName and Password
    </div>
<?php } 

}

?>  
</div>
</div>
</br>
</br>
</br>
</br>
</br>
</br>
</br>
<?php include('footer.php');?>


</div>
</body>
</html>
CatUser
  • 35
  • 1
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  • 5

2 Answers2

2

At the point you call session_start() your script has already sent the HTTP headers, making it to late for you to modify them. session_start() should be called before you make any output to the browser. The same goes for header(). To solve this simply put the function calls before you output any HTML, i.e. at the top of your file.

Further reading: https://stackoverflow.com/a/8028987/4261029

Community
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piers
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0

put session_start(); in first line before any html output

avoids calling session_start in your controls.

whether your page uses sessions then you place it first in your code, or your page does not use sessions.

try this

<?php 

/**
 * your dbcon.php must contain only fonctions
 * no oupout 
 */
include('dbcon.php'); 

?>

<body>

<?php include('header.php'); ?>
<?php include('nav-top1.php'); ?>
<div class="wrapper">


</br>
</br>
</br>
</br>
</br>
</br>
</br>
<div id="element" class="hero-body-index">
    <div class="alert alert-info">
    <p><font color=""><h2>Login</h2></font></p>
    Enter the details to login your account
    </div>

    <hr>
    <form method="POST" >
    <table>
    <tr><td><font color="">UserName:</font>&nbsp;&nbsp;</td><td><input type="text"  name="UserName" class="UserName_hover"></td></tr>
    <tr><td>...<td></tr>
    <tr><td><font color="">Password:</font>&nbsp;&nbsp;</td><td><input type="Password" name="Password" class="Password_hover"></td></tr>
    <tr><td>...<td></tr>
    <tr><td></td><td>   <button class="btn btn-primary btn-large" name="Login"><i class="icon-ok-sign icon-large"></i>&nbsp;Login</button></td></tr>
    <tr><td>
    </td><tr>
    </form>
    </table>

    </br>
    <div class="error">
    <?php

if (isset($_POST['Login'])){

$UserName=$_POST['UserName'];
$Password=$_POST['Password'];

$login_query=mysql_query("select * from user where UserName='$UserName' and Password='$Password' and User_Type='Admin'");
$count=mysql_num_rows($login_query);

$login_query1=mysql_query("select * from user where UserName='$UserName' and Password='$Password' and User_Type='User'");
$count1=mysql_num_rows($login_query1);



$row1=mysql_fetch_array($login_query1);
$f=$row1['FirstName'];
$l=$row1['LastName'];

$row=mysql_fetch_array($login_query);
$f=$row['FirstName'];
$l=$row['LastName'];





if ($count1 == 1){
//  put this in another file
session_start();
$_SESSION['id']=$row1['User_id'];
$_SESSION['User_Type']=$row1['User_Type'];
$type=$row1['User_Type'];

mysql_query("INSERT INTO history (data,action,date,user)VALUES('$f $l', 'Login', NOW(),'$type')")or die(mysql_error());

header('location:home_user.php');
}

if ($count > 0){
//  put this in another file
session_start();
$_SESSION['id']=$row['User_id'];
$_SESSION['User_Type']=$row['User_Type'];
$type=$row['User_Type'];

mysql_query("INSERT INTO history (data,action,date,user)VALUES('$f $l', 'Login', NOW(),'$type')")or die(mysql_error());


header('location:home.php');
}else{
?>
    <div class="alert alert-error">
    <button class="close" data-dismiss="alert">Ч</button>
   Please check your UserName and Password
    </div>
<?php } 

}

?>  
</div>
</div>
</br>
</br>
</br>
</br>
</br>
</br>
</br>
<?php include('footer.php');?>


</div>
</body>

Ruddy Lodonou Oke
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  • 1
  • 3