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[英]HTML/PHP - Validation - Basic validation requirements for e-commerce websites? (first and last name along with email)
[英]How to use a foreach loop to echo first name, last name, and email address objects in an array in PHP and along with HTML
我是PHP新手,一直在努力将名字,姓氏和电子邮件地址作为foreach循环内的对象来回显。 我使用了Profile.php类来定义那些以及get和set方法,然后使用User.php类来设置Username和Profile对象及其get和set方法。 据我尝试获得帮助的人士说,我根本不使用用户名对象作为答案。 我相信问题出在index.php的foreach循环内,但是我已经工作了几个小时,还无法解决这个问题。 这是该程序的UML。
这是代码本身:
index.php文件:
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<?php
require_once('User.php');
require_once('Profile.php');
$professors = array("Andrew Besmer", "Gerry Derksen");
$andrewUser = new User();
$andrew = new Profile();
$andrewUser->setProfile($andrew);
$andrew->setFirstName("Andrew");
$andrew->setLastName("Besmer");
$andrew->setEmailAddress("besmera@fakeemail.com");
$gerryUser = new User();
$gerry = new Profile();
$gerryUser->setProfile($gerry);
$gerry->setFirstName("Gerry");
$gerry->setLastName("Derksen");
$gerry->setEmailAddress("derkseng@fakeemail.com");
foreach($professors as $profile) {
echo "<h2>" . $profile . "</h2>";
echo "<ul>";
echo "<li><b>First:</b>" . $profile->getFirstName() . "</li>";
echo "<li><b>Last:</b>" . $profile->getLastName() . "</li>";
echo "<li><b>Email:</b>" . $profile->getEmailAddress() . "</li>";
echo "</ul>";
}
echo "<br>";
?>
</body>
</html>
Profile.php:
<?php
class Profile {
protected $firstName = "";
protected $lastName = "";
protected $emailAddress = "";
public function __construct(){
}
public function getFirstName(){
return $this->firstName;
}
public function setFirstName($firstName){
$this->firstName = $firstName;
}
public function getLastName() {
return $this->lastName;
}
public function setLastName($lastName) {
$this->lastName = $lastName;
}
public function getEmailAddress() {
return $this->emailAddress;
}
public function setEmailAddress($emailAddress) {
$this->emailAddress = $emailAddress;
}
}
?>
user.php的:
class User {
protected $username = "";
protected $professors = array();
public function __construct(){
}
public function getUsername(){
return $this->username;
}
public function setUsername($username) {
$this->username = $username;
}
public function getProfile(){
return $this->profile;
}
public function setProfile($profile){
$this->profile = $profile;
}
}
感谢您的帮助和您的宝贵时间。
$professors = array("Andrew Besmer", "Gerry Derksen");
如您所见,此数组包含string
(教授的姓名),而不是对象。 因此,在foreach
循环中:
foreach($professors as $profile)
您将获得字符串"Andrew Besmer"
和"Gerry Derksen"
作为$profile
变量的值,这不是我们想要的。
为了解决这个问题,您可以在创建对象之后在foreach
循环之前定义$professors
数组,如下所示:
$professors = array($andrewUser, $gerryUser);
然后在foreach
循环中,您将获得User
对象,并可以通过它访问Profile
对象:
foreach ($professors as $user) {
echo $user->profile->getEmailAddress();
}
希望这可以帮助您开始解决问题。
代替
$professors = array("Andrew Besmer", "Gerry Derksen");
尝试使用
$professors[] = $andrewUser;
$professors[] = $gerryUser;
foreach ($professors as $professor) {
echo "<h2>" . $professor->profile->getFirstName() . "</h2>";
etc...
}
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