Question

我的php文件/代码在本地可以正常工作，但是当您将其上传到服务器时，它会返回

警告：无法修改标头信息-已在/ home / techover / public_html / abira / Capstone2 /中发送（由/home/techover/public_html/abira/api/apiOnly.php:1开始的输出）发送的标头信息第27行的login.php

login.php

<?php
require '../api/dbcon.php';
require '../api/apiOnly.php';

      if(session_id() == '' || !isset($_SESSION)) {
    // session isn't started
             session_start();
          }  

//FACULTY - USER LOGIN


if(isset($_POST['login'])){
  //do query here
  $stmt = $conn->prepare('SELECT username, campus, designation FROM accounts where username = ? AND password = ? ');
  $stmt->bind_param('ss', $u, $p);
  $u=$_POST['username'];
  $p=md5($_POST['password']);
  $stmt->execute();
  $stmt->bind_result($username,$campus, $designation);
  if($stmt->fetch()>0){
   $_SESSION['usr_fullname'] = $username;
   $_SESSION['usr_type'] = $designation;
  $_SESSION['usr_campus'] = $campus;
   if($_SESSION['usr_type']=='admin'){
header('location: home.php');
   exit();
   }else if($_SESSION['usr_type']=='director'){
   header('location: director-index.php');
   exit(); 
   }

  }else{
 $faculty = json_decode($api->authenticate_student($_POST['username'],$_POST['password']),true);
   if(!empty($faculty[0]['usr_fullname'])){
   $_SESSION['usr_fullname'] = $faculty[0]['usr_fullname'];
    $_SESSION['usr_type'] = 'faculty';
    header('location: faculty-index.php');
   }else{
        echo "<script type='text/javascript'>
                alert ('Username and Password unmatched!'); 
                window.location.href='login.php';</script>";
}



  }
  $stmt->close();
  $conn->close();

}

?>

dbcon.php

      <?php
   if(session_id() == '' || !isset($_SESSION)) {
// session isn't started
         session_start();
      }  
     error_reporting(E_ALL & E_STRICT);
     ini_set('display_errors', '1');
     ini_set('log_errors', '0');
     ini_set('error_log', './');

     $dbhost = 'localhost';
     $dbuser = '------';
     $dbpass = '-----';
     $dbtable = "------";
     $conn = new mysqli($dbhost, $dbuser, $dbpass, $dbtable);

     if(!$conn ){
        die('Could not connect: ' . mysqli_error());
     }
  ?>

抱歉，此开发中的新内容

Answer 1

在php标记后的文件开始处启动会话

  if(session_id() == '' || !isset($_SESSION)) {
// session isn't started
         session_start();
      }

php文件返回一个无法修改的标头信息-已发送的标头（输出开始

1 个答案: