登录在本地服务器上有效，而在实时服务器上无效

我登录管理面板和成员面板在本地服务器上都可以正常工作，但在Live服务器上成员面板不工作。由于管理员和成员面板都使用相同的连接文件，所以这意味着连接文件工作正常。当我们填写错误的用户或密码时，它会显示

无效的用户或密码

但当我们使用正确的用户或密码登录时，它会返回，没有任何错误指示。

我的登录文件上php部分是：

<?php
    include_once("../init.php");
    $msg='';
    ?>
    <?php

    if(isset($_POST['click']))
    {
        $user = trim($_POST['user']);   
        $pass = trim($_POST['pass']);   
        if(($user =='' )|| ($pass=='')){
            $msg ='Please enter username & password';   
        }else{
            $npass = ($pass);
            $qry = mysql_query("select * from user where user ='$user'");
            if(mysql_num_rows($qry)==0) {
                $msg ='Invalid UserName';   
            } else {
                $res = mysql_fetch_array($qry);
                if($res['pass']==$npass) {

                        $_SESSION['USE_USER']       = $res['user'];
                        $_SESSION['SID']            = $res['id'];
                        $_SESSION['USE_NAME']       = $res['fname'];
                        $_SESSION['USE_SPONSOR']    = $res['sponsor'];
                        $_SESSION['PACKAGE_AMT']    = $res['package_amt'];
                        $_SESSION['ADDRESS']        = $res['address'];
                        $_SESSION['PHONE']          = $res['phone'];
                        $_SESSION['JOIN_DATE']      = $res['join_date'];
                        header('location: main.php');
                } else {
                    $msg ='Invalid Password';   
                }
            }       
        }
    }
?>

我的头文件main.php是

<?php
    include_once("../init.php");
    validation_check($_SESSION['SID'],MEM_HOME_ADMIN);
    $msg='';
    $dir ='../'.USER_PIC;
    $sId = $_SESSION['SID'];
?>

会话从另一个名为function.php 的文件启动

<?php
    function logout($destinationPath)
    {
        if(count($_SESSION))
        {
            foreach($_SESSION AS $key=>$value)
            {
                session_unset($_SESSION[$key]);
            }
            session_destroy();
        }
        echo "<script language='javaScript' type='text/javascript'>
                window.location.href='".$destinationPath."';
            </script>";
    }
    function validation_check($checkingVariable, $destinationPath)
    {
        if($checkingVariable == '')
        {
            echo "<script language='javaScript' type='text/javascript'>
                window.location.href='".$destinationPath."';
            </script>";
        }
    }
    function realStrip($input)
    {
        return mysql_real_escape_string(stripslashes(trim($input)));
    }
    function no_of_record($table, $cond)
    {
        $sql    = "SELECT COUNT(*) AS CNT FROM ".$table." WHERE ".$cond;
        $qry    = mysql_query($sql);
        $rec    = mysql_fetch_assoc($qry);
        $count  = $rec['CNT'];
        return $count;
    }
    //drop down
    function drop_down($required=null, $text_field, $table_name, $id, $name, $cond, $selected_id=null)
    {
        $qry = mysql_query("SELECT $id, $name FROM $table_name WHERE $cond ORDER BY $name ASC");
        $var = '';
        if(mysql_num_rows($qry)>0)
        {
            $var = '<select id="'.$text_field.'" name="'.$text_field.'" '.$required.'>';
            $var .='<option value="">--Choose--</option>';
            while($r = mysql_fetch_assoc($qry))
            {
                $selected = '';
                if($selected_id==$r[$id]){
                    $selected = 'selected="selected"';
                }
                $var .='<option value="'.$r[$id].'" '.$selected.'>'.$r[$name].'</option>';
            }
            $var .='</select>';
        }
        echo $var;
    }
    function uploadResume($title,$uploaddoc,$txtpropimg)
    {
        $upload= $uploaddoc;
        $filename=$_FILES[$txtpropimg]['name'];
        $fileextension=strchr($filename,".");
        $photoid=rand();
        $newfilename=$title.$photoid.$fileextension;
        move_uploaded_file($_FILES[$txtpropimg]['tmp_name'],$upload.$newfilename);
        return $newfilename;
    }

    function fRecord($field, $table, $cond)
    {
        $fr = mysql_fetch_assoc(mysql_query("SELECT $field FROM $table WHERE $cond"));
        return $fr[$field];
    }

    function get_values_for_keys($mapping, $keys) {
      $output_arr = '';
      $karr = explode(',',$keys);
      foreach($karr as $key) {
       $output_arr .= $mapping[$key].', ';
      }
      $output_arr = rtrim($output_arr, ', ');
      return $output_arr;
    }
    function getBaseURL() {
    $isHttps = ((array_key_exists('HTTPS', $_SERVER) 
            && $_SERVER['HTTPS']) ||
        (array_key_exists('HTTP_X_FORWARDED_PROTO', $_SERVER) 
                && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')
    );
    return 'http' . ($isHttps ? 's' : '') .'://' . $_SERVER['SERVER_NAME'];
}

    function request_uri()
    {
    if ($_SERVER['REQUEST_URI'])
    return $_SERVER['REQUEST_URI'];
    // IIS with ISAPI_REWRITE
    if ($_SERVER['HTTP_X_REWRITE_URL'])
    return $_SERVER['HTTP_X_REWRITE_URL'];
    $p = $_SERVER['SCRIPT_NAME'];
    if ($_SERVER['QUERY_STRING'])
    $p .= '?'.$_SERVER['QUERY_STRING'];
    return $p;
    }
    preg_match ('`/'.FOLDER_NAME.'(.*)(.*)$`', request_uri(), $matches);
    $tableType = (!empty ($matches[1]) ? ($matches[1]) : '');
    $url_array=explode('/',$tableType);


?>

此外，我已经创建了像LH1450429882这样的单词和时间用户id，并且列是verture类型。我认为这对登录没有影响。

我认为主要错误来自function.php。很抱歉代码太长，但我试图涵盖编码的所有部分。

一周以来，我一直在努力处理这个代码。提前感谢您的帮助。