I'm making an web app with MySQL and PHP (OOP) thats has CRUD with multiple tables, and I'm trying to echo the variable but it returns this error: Warning: Undefined variable $id_customer Can someone help on what am I doing…
Abstract class hide the implementation and group of similar type data. Group of data is understandable but implementation hiding is not. According to the following code: abstract class area { protected $a; protected $b; abstract public function CalculateArea($ax, $ay); }…
I have 2 models named AdminContent, AdminCategory. I have content_category_id in my admin_contents table. I have category_id and category_name in my admin_categories table. I linked category_id with content_category_id foreign. I am using the hasOne() function in my Admin Content model.…
Please refer this Code input This code doesn't give the expected output class User{ protected $name; protected $age; public function __construct($name, $age){ $this->name = $name; $this->age = $age; } } class Customer extends User{ private $balance; public function __construct($name, $age,…
I'm beginning to learn the object-oriented programming in order to make a project : while I have some files that have been given to help me by my internship tutor, I can't manage to work with it. So I struggle…
I am working on a project called "Flash card". Does anyone know how to share the same object between more than two functions? It seems setting the variable as global is not the answer. May I know why it isn't?…
I have created a program, where I have the class dog, with many attributes, together with methods for creating an instance of the class, constructor and getting and setting the attributes. Then I have class CPanel, which is supposed to…
I am developing an messaging app using react-native and socket.io . when I send the message the message gets delivered successfully but the text on the text-field doesn't clear up and I get the error message Warning: Can't perform a…
Is it possible to have interfaces with other paramaters together like here below? I do this because I have private setters and have one constructor. planning constructor (Logic) public Planning( IPlanningDAL planningDAL, IPlanningParticipantDAL planningParticipantDAL, ICategoryCollectionDAL categoryCollectionDAL, ITaskCollectionDAL taskCollectionDAL, ITaskDAL taskDAL,…
For some Perl diagnostic tests, I'm recording assorted bits of information formatted as JSON using JSON::MaybeXS. I get an error when I want to record the current Perl version, which I obtain from the special variable $^V. As the minimal…