I am getting the error "Undefined property '$title'. intelephense (1014)" for the employee class.
class User {
// Properties are attributes that belong to a class
public $name;
public $email;
public $password;
public function __construct($name, $email, $password) {
$this->name = $name;
$this->email = $email;
$this->password = $password;
}
function set_name($name) {
$this->name = $name;
}
function get_name() {
return $this->name;
}
}
// Inheritence
class Employee extends User {
public function __construct($name, $email, $password, $title)
{
parent::__construct($name, $email, $password);
$this->title = $title;
}
public function get_title() {
return $this->title;
}
}
$employee1 = new Employee('Sara', 'sara#gmail.com', '123', 'manager');
echo $employee1->get_title;
I am also getting the same error for '$get_title' when I try to echo on the last line.
I was expecting to see the employee's title: 'manager'.
It's not :
echo $employee1->get_title;
but :
echo $employee1->get_title();
Try using an IDE to develop, this will avoid this kind of error thanks to autocompletion. VSCode for example.
Edit: you forgot the declaration of $title in the class Employees
Related
I'm having difficulties to understand the given code and the reason behind dependency injection. I've got the following error:
Uncaught Error: Call to undefined method Question::getFullName() in C:\xampp\htdocs\OOP\Index.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\OOP\Index.php on line 10.
Even if I instantiate an object of the Author class in the constructor, I keep getting a string in the Question class once I try to use getQuestion().
require 'Author.php';
class Question {
private $author;
private $question;
public function __construct($question, Author $author) {
$this->author = $author;
$this->question = $question;
}
public function getAuthor() {
$firstname = $this->author->getFirstName();
$lastname = $this->author->getLastName();
$fullaname = $firstname . $lastname;
return $this;
}
public function getQuestion() {
return $this->question;
}
}
<?php
class Author {
private $firstName;
private $lastName;
private $fullName;
public function __construct($firstName, $lastName) {
$this->firstName = $firstName;
$this->lastName = $lastName;
}
public function getFirstName() {
return $this->firstName;
}
public function getLastName() {
return $this->lastName;
}
public function getFullName() {
return $this->fullName = $this->firstName." ".$this->lastName;
}
}
require 'Question.php';
$question = new Question("What is the author's name?", new Author("josel", "parayno"));
echo $question->getQuestion();
echo $question->getFullName();
$question really does not have getFullName method. Method getFullName exists in class Author. And after creating and "sending" to Question, when it was created method getFullName available in class Question private $author property.
But if you want to get Athor name by follow code, you need try
$question->getAuthor()->getFullName();
And if you do this, you take error again, becouse in question->getAuthor you return $this, and in this case this is a Question object. For getting author name from question object you should to do follow:
Fix getAuthor like this
public function getAuthor()
{
$firstname = $this->author->getFirstName();
$lastname = $this->author->getLastName();
return $this->author;
}
Rewite call name in you index.php like this
echo $question->getAuthor()->getFullName();
Here is my sample code Class User but not working when I added the static method with the public methods:
<?php
namespace App\Classic;
class User
{
public $username;
public static $upassword;
public $age;
public $message;
public function username($username)
{
$this->username = $username;
echo $this->username."<br>";
return $this;
}
public static function password($upassword)
{
self::$upassword = $upassword;
echo self::$upassword."<br>";
}
public function age($age)
{
$this->age = $age;
echo $this->age."<br>";
return $this;
}
public function message($message)
{
$this->message = $message;
echo $this->message."<br>";
return $this;
}
}
and this is the side effect of chaining method:
$user = new User();
$user::password('secret')
->username('admin')
->age(40)
->message('lorem ipsum');
I dont know what is the logic behind doing this, but still this solution will be helpful.
Try this code snippet here
<?php
namespace App\Classic;
ini_set('display_errors', 1);
class User
{
public $username;
public static $upassword;
public static $currentObject=null;//added this variable which hold current class object
public $age;
public $message;
public function __construct()//added a constructor which set's current class object in a static variable
{
self::$currentObject= $this;
}
public function username($username)
{
$this->username = $username;
echo $this->username . "<br>";
return $this;//added this statment which will return current class object
}
public static function password($upassword)
{
self::$upassword = $upassword;
echo self::$upassword . "<br>";
return self::$currentObject;
}
public function age($age)
{
$this->age = $age;
echo $this->age . "<br>";
return $this;
}
public function message($message)
{
$this->message = $message;
echo $this->message . "<br>";
return $this;
}
}
$user = new User();
$user::password('secret')
->username('admin')
->age(40)
->message('lorem ipsum');
I'm just beginner with PHP OOP. I have a class and output is empty:
$test = new form('name1', 'passw2');
$test->getName();
and class:
<?php
class form
{
protected $username;
protected $password;
protected $errors = array();
function _construct($username, $password){
$this->username=$username;
$this->password=$password;
}
public function getsomething() {
echo '<br>working'. $this->getn() . '<-missed';
}
public function getName(){
return $this->getsomething();
}
public function getn() {
return $this->username;
}
}
?>
And output is only text without username:
POST working
working<-missed
Where is name1?
I've modifed your code a bit and added some examples to play around with.
This should get you started.
class form
{
protected $username;
protected $password;
protected $errors = array();
// construct is a magic function, two underscores are needed here
function __construct($username, $password){
$this->username = $username;
$this->password = $password;
}
// functions starting with get are called Getters
// they are accessor functions for the class property of the same name
public function getPassword(){
return $this->password;
}
public function getUserName() {
return $this->username;
}
public function render() {
echo '<br>working:';
echo '<br>Name: ' . $this->username; // using properties directly
echo '<br>Password:' . $this->password; // not the getters
}
}
$test = new form('name1', 'passw2');
// output via property access
echo $test->username;
echo $test->password;
// output via getter methods
echo $test->getUserName();
echo $test->getPassword();
// output via the render function of the class
$test->render();
Hi You have used _construct it should be __contrust(2 underscores)
I am trying to write a small engine in PHP to handle data but i keep on getting this error:
Fatal error: Class 'Factory\dataHandler' not found in /Applications/MAMP/htdocs/Imperial/lp/php/dataPhraserController.php on line 12
Been now trying to find a way of solving the problem but not luck.....
My code:
DataFactory.php
<?php
namespace Factory;
class dataHandler{
protected $firstName;
protected $lastName;
protected $email;
protected $confirmEmail;
protected $phoneNumber;
public function setFirstName($firstName)
{
$this->firstName = $firstName;
}
public function setLastName($lastName)
{
$this->lastName = $lastName;
}
public function setEmail($email)
{
$this->email = $email;
}
public function setConfirmEmail($confirmEmail)
{
$this->confirmEmail = $confirmEmail;
}
public function setPhoneNumber($phoneNumber)
{
$this->phoneNumber = $phoneNumber;
}
public function getFirstName()
{
var_dump($this->firstName);
}
public function getLastName()
{
return $this->lastName;
}
public function getEmail()
{
return $this->confirmEmail;
}
public function getPhoneNumber()
{
return $this->phoneNumber;
}
}
dataPharserController.php:
<?php
namespace PhraserController;
use Factory\dataHandler;
class DataPhraser
{
private $object;
public function __construct()
{
$this->object = new dataHandler;
}
public function pharseFirstName()
{
if(!isset($_POST['first_name']))
{
$this->object->setFirstName($firstName = null);
var_dump($_POST['first_name']);
}else{
$this->object->setFirstName($firstName = $_POST['first_name']);
}
}
}
$test = new DataPhraser();
$test->pharseFirstName();
The idea is to collect data from a submitted html form, can someone help me.. thx
Place this in one of your config files that are loaded before everything
DEFINE('LIB_DIR', '/path_to_library_dir_of_project/');
function AutoloadDefault($ClassName)
{
$File = LIB_DIR.'/' . $ClassName. '.php';
// echo 'Default:'.$File.'<br/>';
if (file_exists($File))
{
require_once($File);
}
}
spl_autoload_register('AutoloadDefault');
Then just point to right LIB_DIR folder. spl_autoload_register will load the class file
Let's say I have 3 objects : "Place", "Person", "Action".
Depending on the place where is the person and the age of this person, this person can do different action.
For example :
$place->person->action->drive(); // OK if place is "parking" and "person" is 18+
$place->person->action->learn(); // OK if the place is "school" and person is less than 18.
How can I access the data about the objects "Person" and "Place" from the Action class ?
Classes examples :
class Place {
public $person;
private $name;
function __construct($place, $person) {
$this->name = $place;
$this->person = $person;
}
}
class Person {
public $action;
private $name;
private $age;
function __construct($name, $age) {
$this->name = $name;
$this->age = $age;
$this->action = new Action();
}
}
class Action {
public function drive() {
// How can I access the person's Age ?
// How can I acess the place Name ?
}
public function learn() {
// ... Same problem.
}
}
I think I could transmit "$this" from Person to Action when I create the Action Object (ie. $this->action = new Action($this)), but what about the Place data ?
It doesn't make sense to make Person a property of Place nor Action a property of Person.
I'd be more inclined to create public getters for Person and Place's properties and either make them injectable properties of Action or at least pass them as arguments to Action's methods, eg
class Place
{
private $name;
public function __construct($name)
{
$this->name = $name;
}
public function getName()
{
return $this->name;
}
}
class Person
{
private $name;
private $age;
public function __construct($name, $age)
{
$this->name = $name;
$this->age = $age;
}
public function getName()
{
return $this->name;
}
public function getAge()
{
return $this->age();
}
}
class Action
{
private $person;
private $place;
public function __constuct(Person $person, Place $place)
{
$this->person = $person;
$this->place = $place;
}
public function drive()
{
if ($this->person->getAge() < 18) {
throw new Exception('Too young to drive!');
}
if ($this->place->getName() != 'parking') {
throw new Exception("Not parking, can't drive!");
}
// start driving
}
}