how to delete object in a constructor in PHP? - php

Question

I have my code here and I dont know how to delete object with this kind of method
$patient->deletePatient(2) im a beginner and I cant find an answer in internet and I think the way i use var_dump was incorrect please help im stuck
this is my code:
<?php
$index = 0;
class Clinic {
public $name;
public $age;
public $gender;
function Patient($name,$age,$gender){
$this->name = $name;
$this->age = $age;
$this->gender = $gender;
$id = $name;
$id = $age;
$id = $gender;
}
function assignPatient($name,$age,$gender){
$this->Patient($name,$age,$gender);
}
function deletePatient($id=0){
$this->Patient($id);
var_dump((unset) $id);
}
}
$patient = new Clinic;
$patient->assignPatient("Patrick star",18,"Male");
$patients[$index] = $patient;
$index++;
$patient->assignPatient("SpongeBob Squarepants",17,"Male");
$patients[$index] = $patient;
$index++;
$patient->assignPatient("Eugene Krab",28,"Male");
$patients[$index] = $patient;
$index++;
$patient->deletePatient(2);
foreach($patients as $patient)
{
echo $patient->name . " ";
echo $patient->age . " ";
echo $patient->gender . "\n";
}

Answer 1

Patient and Clinic should be separate objects. Then you can store Patient objects inside Clinic->patients array.
class Patient{
private $name;
private $age;
private $gender;
public function __construct($name, $age, $gender){
$this->name = $name;
$this->age = $age;
$this->gender = $gender;
}
public function getName(){
return $this->name;
}
public function getAge(){
return $this->age;
}
public function getGender(){
return $this->gender;
}
}
class Clinic{
private $patients = [];
public function getPatients(){
return $this->patients;
}
public function assignPatient($name, $age, $gender){
$this->patients[] = new Patient($name, $age, $gender);
}
public function deletePatient($index){
unset($this->patients[$index]);
}
}
$clinic = new Clinic();
$clinic->assignPatient("Patrick star",18,"Male");
$clinic->assignPatient("SpongeBob Squarepants",17,"Male");
$clinic->assignPatient("Eugene Krab",28,"Male");
$clinic->deletePatient(1);
var_dump($clinic->getPatients());

Answer 2

<?php
class Patient {
public $name;
public $age;
public $gender;
function __construct($name, $age, $gender) {
$this->name = $name;
$this->age = $age;
$this->gender = $gender;
}
}
class Clinic {
private $patients = [];
private $patientIndex = 0;
function assignPatient($patient) {
$this->patients[$this->patientIndex] = $patient;
++$this->patientIndex;
return $this->patientIndex;
}
function deletePatient($id) {
if(array_key_exists($id, $this->patients)) {
unset($this->patients[$id]);
return true;
}
return false;
}
function getPatients() {
return $this->patients;
}
}
$clinic = new Clinic();
$patient1 = new Patient("Patrick star",18,"Male");
$id1 = $clinic->assignPatient($patient1);
$patient2 = new Patient("SpongeBob Squarepants",17,"Male");
$id2 = $clinic->assignPatient($patient2);
$patient3 = new Patient("Eugene Krab",28,"Male");
$id3 = $clinic->assignPatient($patient3);
$clinic->deletePatient($id2);
foreach($clinic->getPatients() as $patient) {
var_dump($patient);
}