警告：mysql_query（）要求参数1为字符串，对象在第20行的C：\ xampp \ htdocs \ social_network \ functions \ functions.php中给出

Question

错误：

警告：mysql_query（）要求参数1为字符串，对象在第20行的C：\ xampp \ htdocs \ social_network \ functions \ functions.php中给出

警告：mysql_num_rows（）期望参数1为资源，在第21行的C：\ xampp \ htdocs \ social_network \ functions \ functions.php中给出null

我正在使用连接：

$ con = mysqli_connect（＆＃34; localhost＆＃34;，＆＃34; root＆＃34;，＆＃34;＆＃34;，＆＃34; social_network＆＃34;）或死亡（＆＃34 ;连接未建立＆＃34;）;

代码：     

function InsertUser(){
    global $con;
if(isset ($_POST['sign_up'])){

    $name = $_POST['u_name'];
    $psss = $_POST['u_pass'];
    $email = $_POST['u_email'];
    $country = $_POST['u_country'];
    $gender = $_POST['u_gender'];
    $b_day = $_POST['u_birthday'];
    $name = $_POST['u_name'];
    $date = date("d-m-y");
    $status = "unverified";
    $posts = "No";

    $get_email = "select * from users where user_email='$email'";
    $run_email = mysql_query($con,$get_email);
    $check = mysql_num_rows($run_email);

    if($check==1){

        echo "<script>alert ('Email is already registered, please try another one!')</script>";
        exit();
    }

}
}

?>

Answer 1

$run_email = mysql_query($get_email,$con);

FYI mysql驱动程序已被弃用，您必须使用mysqli或PDO。