所以基本上，我对 PHP 很陌生，我无法让它工作。我在一个对象中有一个对象，我正在尝试访问它的字段。它从 MySQL 数据库中提取数据。我不确定错误发生在哪里。我希望有人能指出我正在犯的一个公然错误或什么的。谢谢！
<?php
include("Data/Classes.php");
include("Data/Utils.php");
$contacts = listBusinessesWithDefaultContact() or die();
?>
<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Lab 05 - Home</title>
<link rel="stylesheet" type="text/css" href="Styles/main.css" />
</head>
<body>
<div id="Wrapper">
<header>
<h1>Contacts</h1>
</header>
<div id="MainContent">
<img id="bg" alt="Background" src="Images/Ring.png" />
<?php
foreach ($contacts as $BusinessWithContact) {
echo $contacts->Contact->FirstName;
}
?>
</div>
<nav>
<a id="HomeLink" href="index.php"><img alt="Home Image" src="Images/Home.png" /></a>
<a id="CreateLink" href="create.php"><img alt="Create Image" src="Images/Create.png" /></a>
<a id="ReadLink" href="read.php"><img alt="Read Image" src="Images/Read.png" /></a>
<a id="UpdateLink" href="update.php"><img alt="Update Image" src="Images/Update.png" /></a>
<a id="DeleteLink" href="delete.php"><img alt="Delete Image" src="Images/Delete.png" /></a>
</nav>
</div>
</body>
</html>
这是“Classes.php”：
<?php
class Business {
public $BusinessID;
public $BusinessName;
public $BusinessPhone;
public $BusinessEmail;
public $Website;
public $Address;
public $City;
public $Province;
public $PostalCode;
public $Notes;
public function __construct($id, $name, $phone, $email, $website, $address, $city, $province, $postalCode, $notes) {
$this->BusinessID = $id;
$this->BusinessName = $name;
$this->BusinessPhone = $phone;
$this->BusinessEmail = $email;
$this->Website = $website;
$this->Address = $address;
$this->City = $city;
$this->Province = $province;
$this->PostalCode = $postalCode;
$this->Notes = $notes;
}
}
class ContactPerson {
public $BusinessID;
public $ContactID;
public $FirstName;
public $LastName;
public $DefaultContact;
public $Email;
public $WorkPhone;
public $CellPhone;
public $Notes;
public function __construct ($bid, $cid, $fName, $lName, $dContact, $email, $wPhone, $cPhone, $notes) {
$this->BusinessID = $bid;
$this->ContactID = $cid;
$this->FirstName = $fName;
$this->LastName = $lName;
$this->Email = $email;
$this->WorkPhone = $wPhone;
$this->CellPhone = $cPhone;
$this->Notes = $notes;
}
}
class BusinessWithContact {
public $Business;
public $Contact;
public function __construct(Business $business, ContactPerson $contact) {
$this->Business = $business;
$this->Contact = $contact;
}
}
?>
最后，“Utils.php”：
<?php
function listBusinessesWithDefaultContact() {
$result = array();
$connection = mysql_connect('[connection]', '[user]', '[pass]') or die (mysql_error());
mysql_select_db('[db]') or die (mysql_error());
$dbResult = mysql_query("select * from Business") or die (mysql_error());
while ($row = mysql_fetch_array($dbResult)) {
$business = new Business($row['BusinessID'], $row['BusinessName'], $row['BusinessPhone'], $row['BusinessEmail'], $row['Website'], $row['Address'], $row['City'], $row['Province'], $row['PostalCode'], $row['Notes']) or die();
$queryString = "select * from ContactPerson where BusinessID = " . $row['BusinessID'] . " and DefaultContact = 1";
$contactResult = mysql_query($queryString) or die(mysql_error());
while ($newRow = mysql_fetch_array($contactResult)) {
$contact = new ContactPerson($newRow['BusinessID'], $newRow['ContactPersonID'], $newRow['FirstName'], $newRow['LastName'], $newRow['DefaultContact'], $newRow['Email'], $newRow['WorkPhone'], $newRow['CellPhone'], $newRow['Notes']) or die();
}
array_push($result, new BusinessWithContact($business, $contact) or die());
}
return $result;
}
function getContact($contactID) {
$result;
$connection = mysql_connect('[connection]', '[user]', '[pass]') or die (mysql_error());
mysql_select_db('[db]') or die (mysql_error());
$dbResult = mysql_query("select * from Contacts where ContactID = $contactID");
while ($row = mysql_fetch_array($dbResult)) {
$result = new Contact($row['ContactID'], $row['Name'], $row['Phone'], $row['Email'], $row['Website'], $row['ContactFirstName'], $row['ContactLastName'], $row['Address'], $row['City'], $row['Province'], $row['Postal']);
}
return $result;
}
function addContact(Contact $item) {
$result;
$connection = mysql_connect('localhost', 'jschaible1', 'dragunov');
mysql_select_db('jschaible1');
$result = mysql_query("insert into Contact values($item->Name, $item->Phone, $item->Email, $item->Website, $item->ContactFirstName, $item->ContactLastName, $item->Address, $item->City, $item->Province, $item->Postal)");
return $result;
}
function updateContact(Contact $item) {
$result;
$connection = mysql_connect('[connection]', '[user]', '[pass]') or die (mysql_error());
mysql_select_db('[db]') or die (mysql_error());
$result = mysql_query("update Contact values set Name = $item->Name, Phone = $item->Phone, Email = $item->Email, Website = $item->Website, ContactFirstName = $item->ContactFirstName, ContactLastName = $item->ContactLastName, Address = $item->Address, City = $item->City, Province = $item->Province, Postal = $item->Postal");
return $result;
}
function deleteContact(Contact $item) {
$result;
$connection = mysql_connect('[connection]', '[user]', '[pass]') or die (mysql_error());
mysql_select_db('[db]') or die (mysql_error());
$result = mysql_query("delete from Contact where ContactID = $item->ContactID");
return $result;
}
?>
编辑：抱歉，澄清一下，我得到的错误是“试图获取非对象的属性”