登录表单在本地主机上正常工作，但不在主机上

Question

此登录过程在我的本地主机上正常工作，但是当我将其上载到主机上并尝试在实时服务器上测试时，它失败！ 我上传了我的数据库到服务器，并试图用注册用户登录，但是当我提交表单时什么都没有发生！ 我使用ajax并提醒从服务器返回的数据，它只是提醒一个空白的消息，没有错误，没有警告，没有数据回应！

<?php 

$username = $_POST['username']; 
$password = $_POST['password']; 
$id; 
$status = 1; 

require_once("../scripts/config.php"); 

$stmt = $con->stmt_init(); 
if ($stmt = $con->prepare("SELECT COUNT(email) AS counte FROM users WHERE email=?")) 
{ 
    $stmt->bind_param("s", $username); 
    $stmt->execute(); 
    $obj = $stmt->get_result()->fetch_object(); 
    $counte = $obj->counte; 
    $stmt->close(); 
} 

if($counte == 1) // email mojud ast 
{ 
    if ($stmt = $con->prepare("SELECT COUNT(*) AS countr, id, fname, lname, img FROM users LEFT JOIN userd ON users.id = userd.userid WHERE email=? AND password=?")) 
{ 
    $stmt->bind_param("ss", $username, $password); 
    $stmt->execute(); 
    $obj = $stmt->get_result()->fetch_object(); 
    $countr = $obj->countr; 
    $id = $obj->id; 
    $fname = $obj->fname; 
    $lname = $obj->lname; 
    $img = $obj->img; 
    $stmt->close(); 
    if($countr == 0) 
    { 
     echo "incorrect"; 
    } 
    else if($countr == 1) 
    { 
     session_start(); 
     $_SESSION['userid'] = $id; 
     echo $img."*".$fname." ".$lname."*".$id."*"; 
    } 
} 
} 
else if($counte == 0) 
{ 
echo "notexist"; 
} 
mysqli_close($con); 
?> 

Answer 1

代替

if($counte == 1) // email mojud ast 
{ 
    } 

试试这个

if($counte > 0) 
{ 
    } 

这是我用我的登录模块 上如果有的话，你要考虑使用PDO这里是我的代码随意用它作为参考

$con = new PDO("mysql:host=". DB_host .";dbname=db", DB_username , DB_password); 



     $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 

     //checking if valid 
     $sql="SELECT * FROM users WHERE username=:var1 AND password=:var2 "; 
     $stmt=$con2->prepare($sql); 
     $stmt->bindParam(':var1',$var1, PDO::PARAM_STR); 
     $stmt->bindParam(':var2',$var2, PDO::PARAM_STR); 
     $stmt->execute(); 

     if($stmt->rowCount() > 0){ 



     }