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Troubleshooting “Warning: session_start(): Cannot send session cache limiter - headers already sent”

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醉酒成梦
醉酒成梦 2020-11-28 14:34

i am getting Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at error

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15条回答
  • 旧时难觅i
    旧时难觅i (楼主)
    2020-11-28 15:16

    You will find I have added the session_start() at the very top of the page. I have also removed the session_start() call later in the page. This page should work fine.

    





Welcome



    





    
  
    
     
  
    
  
    
    
    
    
    
    

    
    		
  
    
  
    
    
    
      
    
        
    
          
    
            
    
              
    
                 
                
    
              
    
                -> Products
                
    
              
    
                -> Categories
                
    
              
    
                -> Sub Categories
                
    
            
    		
            
    
              
    
                 
                
    
              
    
                
                  
    
                    
    
                       
                      
    Manage Categories
    		
                    
    
                  
    		
                
    
              
    
                 

                
                
    
              
    
                



                
    

                
    
                
                
    
                
    





    " . $_SESSION['error'] . "
    ";

                    unset($_SESSION['error']);

                }

                ?>

                
    

                
    
                 

                           

    

                             

                    
    

                    

                   
    

    
 

                
    

                
    




                             ";

    print_r($array);

    echo "";
}


$TARGET_PATH = "images/category";

$cname = $_POST['categoryname'];

$image = $_FILES['image'];

$cname = mysql_real_escape_string($cname);

$image['name'] = mysql_real_escape_string($image['name']);

$TARGET_PATH .= $image['name'];

if ( $cname == "" || $image['name'] == "" )

{

    $_SESSION['error'] = "All fields are required";

    header("Location: managecategories.php");

    exit;

}

if (!is_valid_type($image))

{

    $_SESSION['error'] = "You must upload a jpeg, gif, or bmp";

    header("Location: managecategories.php");

    exit;

}




if (file_exists($TARGET_PATH))

{

    $_SESSION['error'] = "A file with that name already exists";

    header("Location: managecategories.php");

    exit;

}


if (move_uploaded_file($image['tmp_name'], $TARGET_PATH))

{



    $sql = "insert into Categories (CategoryName, FileName) values ('$cname', '" . $image['name'] . "')";

    $result = mysql_query($sql) or die ("Could not insert data into DB: " . mysql_error());

  header("Location: mangaecategories.php");

    exit;

}

else

{





    $_SESSION['error'] = "Could not upload file.  Check read/write persmissions on the directory";

    header("Location: mangagecategories.php");

    exit;

}

?> 

    
    
             
    
                                                        
    
            
            
    
              
                
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