php脚本回显php的一部分，而不是预期的内容[duplicate]

Question

我在使用php脚本时遇到了问题，我创建该脚本是为了将实例插入数据库，但是我得到了一个微不足道的输出，我不知道如何修复它。代码是：

<?php

    try{
        $user = 'root';
        $pass = null;
        $pdo = new PDO('mysql:host=localhost; dbname=divebay', $user, $pass);

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

        $username = $_POST['username'];
        $password = sha1($_POST['password']);
        $location = %_POST['location'];
        $email = $_POST['email'];
        $name = $_POST['fname'] . " " . $_POST['surname'];

        $check = $pdo->prepare('SELECT * FROM user WHERE username=?');
        $check->bindValue(1, $username);
        $check->execute();

        if($check->fetch(PDO::FETCH_OBJ)){
            echo "Account name already exists";
        }
        else{

            $stmt = $pdo->prepare('INSERT INTO user(username, password, location, email, name)
                                  VALUES(:username, :password, :location, :email, :name)');
            $stmt->bindParam(':username', $username, PDO::PARAM_STR);
            $stmt->bindParam(':password', $password, PDO::PARAM_STR);
            $stmt->bindParam(':location', $location, PDO::PARAM_STR);
            $stmt->bindParam(':email', $email, PDO::PARAM_STR);
            $stmt->bindParam(':name', $name, PDO::PARAM_STR);

            if($stmt->execute()){
                echo "Account created";
            }
            else{
                echo "Account could not be created";
            }
        }

        $pdo = null;

    }catch(PDOException $e){
        echo $e->getMessage();
    }


?>

我希望输出类似于“accountcreated”。相反，我得到的输出是以下错误：

setAttribute（PDO:：ATTR_ERRMODE，PDO:：ERRMODE_EXCEPTION）$用户名=$_POST['username']$password=sha1（$_POST['password']）
$location=%\u POST['location']$email=$_POST['email']$name=$\u POST['fname']。" " . $_职位[姓氏]$支票=$pdo-

这个剧本出了什么问题导致了这个？

Answer 1

缺少<代码>

Answer 2

在%\u POST['location']

建议：我还强烈建议将PDO函数包装到一个类中。以下是我个人在每个项目中使用的内容：

将其保存到自己的文件（例如：sql.class.php）

<?php 

class SqlIt{
    public $Sql;
    public $Response;
    private $Host;
    private $DBname;
    private $User;
    private $Pass;
    public $NumResults;

    public function __construct($Sql, $type, $vars){
        if($vars == ""){
            $vars = array();
            }
        try{
        $DB = $this->db_connect();
        $DB->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
            $STH = $DB->prepare($Sql);
            $doit = $STH->execute($vars);
            $this->Result = $doit;
            }
        catch(PDOException $e){
            echo $e->getMessage();
            }
        //find function to run
        switch($type){
            case 'select':
                $this->select($STH);
                break;
            }
        }

    public function select($query){
            $rows = $query->rowCount();
            $this->NumResults = $rows;
            while($row = $query->fetchObject()){
                $this->Response[] = $row;
            }
        }

    //create a separate function for connecting to DB. Private to only this class.
    private function db_connect(){
        $this->User = 'root';
        $this->Pass = '';
        $DBH = new PDO("mysql:host=localhost;dbname=divebaby", $this->User, $this->Pass);
        return $DBH;
        }
    }

?>

然后，要实际运行放置在上面的语句，只需将以下代码右转即可：

$username = $_POST['username'];
$password = sha1($_POST['password']);
$location = $_POST['location'];
$email = $_POST['email'];
$name = $_POST['fname'] . " " . $_POST['surname']; 


$getUser = new SqlIt("SELECT * FROM user WHERE username=?","select",array($username));

    if($getUser){ 
        echo 'Account name already exists';
    }else{
        $insertUser = new SqlIt("INSERT INTO user (username,password,location,email,name) VALUES (?,?,?,?,?)","insert",array($username,$password,$location,$email,$name));

       if($insertUser){ 
           echo 'Account created!';
       }else{
           echo 'Account not created.';
       }

Answer 3

获得该输出的唯一方法是编写以下内容：

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

作为：

$pdo?>setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

错误地