当我尝试将 mysql 连接到 php 时，我的 XAMPP 服务器 returns 出错

Question

class poll
{
private $db;

public function __construct($dbConnection)
{
    $this->db = $dbConnection;
}

public function getPollData(){
    $sql = "SELECT poll_question, yes, no FROM poll WHERE poll_id=1";
    $statement = $this->db->prepare($sql);
    $statement = execute();
    $pollData = $statement->fetchObject();
    return $pollData;
}

}

在我尝试运行这个 class 在我的代码中它说我

Fatal error: Call to undefined function execute() in C:\xampp\htdocs\poll\models\poll.php on line 21

我正在使用 xampp，不明白为什么它不起作用。

Answer 1

修改

$statement = execute();

到

 $statement = $statement->execute();

Answer 2

应该是$statement->execute();

class poll

{

private $db;

public function __construct($dbConnection)
{
    $this->db = $dbConnection;
}

public function getPollData(){
    $sql = "SELECT poll_question, yes, no FROM poll WHERE poll_id=1";
    $statement = $this->db->prepare($sql);
    $statement = $statement->execute(); // You miss the $statement var
    $pollData = $statement->fetchObject();
    return $pollData;
}
}

当我尝试将 mysql 连接到 php 时，我的 XAMPP 服务器 returns 出错

My XAMPP server returns error when I try to connect mysql with php

php

mysql

xampp