Question

错误

警告：mysqli_query（）要求参数1为mysqli，在第22行的E：\ CollegeYear2 \ DesigningAndDevelopingAnInteractiveMediaProduct \ php \ UniServerZ \ www \ WebsiteProject \ ObanScoutsWebsite \ register.php中给出

警告：mysqli_fetch_assoc（）要求参数1为mysqli_result，在第23行的E：\ CollegeYear2 \ DesigningAndDevelopingAnInteractiveMediaProduct \ php \ UniServerZ \ www \ WebsiteProject \ ObanScoutsWebsite \ register.php中给出null

警告：mysqli_num_rows（）要求参数1为mysqli_result，在第25行的E：\ CollegeYear2 \ DesigningAndDevelopingAnInteractiveMediaProduct \ php \ UniServerZ \ www \ WebsiteProject \ ObanScoutsWebsite \ register.php中给出null

警告：mysqli_query（）要求参数1为mysqli，在第34行的E：\ CollegeYear2 \ DesigningAndDevelopingAnInteractiveMediaProduct \ php \ UniServerZ \ www \ WebsiteProject \ ObanScoutsWebsite \ register.php中给出null   有一个问题......

CODE

<?php
require 'connect.inc.php';

$conn = null;


if (isset($_POST['fname']) and isset($_POST['lname'])and isset($_POST['uname'])
    and isset($_POST['pwd1'])and isset($_POST['pwd2'])and isset($_POST['email']) 
    and !empty ($_POST['fname']) and !empty ($_POST['lname']) and !empty ($_POST['uname']) and !empty ($_POST['pwd1'])
    and !empty ($_POST['pwd2']) and !empty ($_POST['email'])) {

        $fname = $_POST['fname'];
        $lname = $_POST['lname'];
        $uname = $_POST['uname'];
        $pwd1 = $_POST['pwd1'];
        $pwd2 = $_POST['pwd2'];
        $email = $_POST['email'];

        if ($pwd1 == $pwd2) {

            $getinfo = "SELECT * FROM users WHERE uname = '$uname'";
            $res = mysqli_query($conn, $getinfo);
            $row = mysqli_fetch_assoc($res);

        if (mysqli_num_rows($res)>0) {

            echo 'User name already taken';
        }   else {

            $pwd1 = PASSWORD_HASH($pwd1, PASSWORD_BCRYPT, array('cost' =>12));

            $sql = "INSERT INTO users ( fname, lname, uname, pwd, email ) VALUES('$fname','$lname','$uname','$pwd1','$email')";

            if (!mysqli_query($conn, $sql)) {

                echo 'There was a problem...';
            }else{
                header("Location: index.php");
            }
        }


        }else{
            echo 'Your passwords didn\'t match';
        }

    }

?>

<h3>Please Register</h3>
<h4><?php echo $conn; ?></h4>

  <form action="register.php" method="POST">
  <input type="text" name="fname" placeholder="First Name"><br>
  <input type="text" name="lname" placeholder="Last Name"><br>
  <input type="text" name="uname" placeholder="User Name"><br>
  <input type="password" name="pwd1" placeholder="Password"><br>
  <input type="password" name="pwd2" placeholder="Re-enter Password"><br>
  <input type="email" name="email" placeholder="E-mail"><br><br>
  <input type="submit">

Answer 1

mysqli_query() expects parameter 1 to be mysqli, null given表示您尚未连接到数据库。检查您与数据库的连接（如果用户名和密码正确且与数据库相同）

警告：mysqli_query（）期望参数1是mysqli，null给定？

1 个答案: