仅变量应在第13行的...中通过引用传递.失败 [英] Only variables should be passed by reference in... on line 13 Fail

问题描述

我正在尝试为网站构建PHP注册表单脚本.我已经完成了这段代码，但是当我单击提交"按钮时，我得到了通知:在第13行中，只有变量应该通过引用传递，而我在这里只能做些事情.非常感谢您的帮助，我又不是PHP专家.

I'm practicing building a PHP registration form script for a website. I have done this code, but when I click the submit button I get the notice: Only variables should be passed by reference in line 13, and I'm stuck on what to do here. Any help is greatly appreciated, again I'm not a PHP expert.

<?php

require 'database.php';

if(!empty($_POST['email']) && !empty($_POST['username']) && !empty($_POST['password'])):

    //Enter the new user into the database
    $sql = "INSERT INTO users (email, username, password) VALUES (:email, :username, :password)";
    $stmt = $conn->prepare($sql);

    $stmt->bindParam(':email', $_POST['email']);
    $stmt->bindParam(':username', $_POST['username']);
    $stmt->bindParam(':password', password_hash($_POST['password'], PASSWORD_BCRYPT));

    if($stmt->execute() ):
        die('Success');
    else: 
        die('Fail');
    endif;  
endif;

?>

这里

推荐答案

更改此内容

$stmt->bindParam(':email', $_POST['email']);
$stmt->bindParam(':username', $_POST['username']);
$stmt->bindParam(':password', password_hash($_POST['password'], PASSWORD_BCRYPT));

对此

$email =  $_POST['email'];
$username = $_POST['username'];
$password = password_hash($_POST['password'], PASSWORD_BCRYPT);

$stmt->bindParam(':email', $email);
$stmt->bindParam(':username', $username);
$stmt->bindParam(':password',$password);

尽管您需要将这些值分配给变量然后将其传递

the error message is clear though you need to assign those values into variables then pass them

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