[英]Fatal error: Cannot redeclare class / Include extern .php
I'm very new to PHP and I got the following problem: Everytime I want to run my file, I get this err message: "Fatal error: Cannot redeclare class Customer in /home/www/p161/html/customer-class.php on line 2" 我刚接触PHP,遇到以下问题:每当我要运行文件时,都会收到以下错误消息:“致命错误:无法在/ home / www / p161 / html / customer-class中重新声明类Customer。第2行的php”
My Code looks like this: 我的代码如下所示:
<?php
include 'customer-class.php';
function crateConnection(){
$database_url = "pdb1.pretago.de";
$username = "p161";
$password = "mJMmTGPR";
$db_name = "usr_p161_1";
//Verbindung zur Datenbank herstellen und setzen des ERRORMODE, damit Exceptions abgefangen
//werden können.
$connection = new PDO("mysql:host=$database_url;dbname=$db_name", $username, $password);
$connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
return $connection;
}
function isInDB($customer, $connection){
$stmt = $connection->prepare("SELECT * FROM Customer WHERE mailadresse = :emailaddress ");
$stmt->bindParam(':emailaddress', $customer->email);
$stmt->execute();
if($stmt->rowCount() == 0){
return false;
}else{
return true;
}
}
function insert($customer, $connection){
$statement = $connection->prepare("INSERT INTO Customer (vorname, nachname, strasse, stadt, plz, mailadresse, telefon) VALUES (?,?,?,?,?,?,?)");
//Query ausführen
$statement->execute($customer->getDataToStore()) or die("SQL Error: ".$statement->queryString." - ".$statement->errorInfo()[2]);
//Verbindung schließen
$connection = null;
}
?>
db-methods.php db-methods.php
<?php
include 'customer-class.php';
include 'db-methods.php';
/*
* Diese Funktion lädt die Form Daten in ein Customer Objekt
*/
function getCustomer(){
$fname = $_POST["fname"];
$lname = $_POST["lname"];
$street = $_POST["street"];
$city = $_POST["city"];
$place = $_POST["place"];
$email = $_POST["email"];
$phone = $_POST["phone"];
$message = $_POST["message"];
return new Customer($fname, $lname, $street, $city, $place, $email, $phone, $message);
}
function sendMail($customer){
$empfaenger = "c.torluccio@gmx.de";
$betreff = "Kontaktformular von Ihrer Homepage";
$from = "Von $customer->fname, $customer->lname <$customer->email>";
$text = $customer->message;
mail($empfaenger, $betreff, $text, $from);
}
try{
$connection = createConnection();
//Laden der Form Daten in ein Customer Objekt
$customer = getCustomer();
if(!isInDB($customer, $connection)){
insert($customer, $connection);
}
//E-Mail versenden
//sendMail($customer);
header( 'Location: http://p161.prtg1.pretago.de/wordpress/testseite-fuer-db/');
exit();
}catch(PDOException $exception){
echo "Verbdinung fehlgeschlagen: " . $exception->getMessage();
}
?>
contact-form.php contact-form.php
<?php
class Customer{
var
$fname,$lname,
$street, $city,
$place,
$email, $phone,
$message;
function Customer($fname, $lname, $street, $city, $place, $email, $phone, $message){
$this->fname = $fname;
$this->lname = $lname;
$this->street = $street;
$this->city = $city;
$this->place = $place;
$this->email = $email;
$this->phone = $phone;
$this->message = $message;
}
//Funktion, welche ein Array zurückgibt in welchem die Daten die gespeichert werden sollen enthalten sind
function getDataToStore(){
return array($this->fname, $this->lname, $this->street, $this->city, $this->place, $this->email, $this->phone);
}
}
?>
customer-class.php 客户类.php
So I've thought that I declared Customer twice, but I can't recognize anything. 所以我以为我两次声明了Customer,但我什么也听不见。 So I googled, but I can't find an answer. 所以我用谷歌搜索,但找不到答案。 Can anybody help me? 有谁能够帮助我?
this because you include class customer file twice, you should use include_once
instead, or remove this line include 'customer-class.php';
这是因为您两次包含了类客户文件,所以您应该改用include_once
,或删除include 'customer-class.php';
这一行include 'customer-class.php';
: :
<?php
//include 'customer-class.php';
include 'db-methods.php';
because you included it in the db-methods.php
file before 因为您之前将它包含在db-methods.php
文件中
You include 'customer-class.php';
您包括'customer-class.php';
in your db-methods.php
: 在您的db-methods.php
:
<?php
include 'customer-class.php';
Shortly after, you include it again in your contact-form.php
, together with db-methods.php
: 不久之后,将其与db-methods.php
一起再次包含在contact-form.php
:
<?php
include 'customer-class.php';
include 'db-methods.php';
which results in a duplicate definition. 这导致定义重复。 use include_once to avoid this problem. 使用include_once可以避免此问题。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.