Method is not compatible with method intelephense(1038) [duplicate] - php

Question

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Fatal error: Declaration of .. must be compatible with .. PHP
(6 answers)
Closed last year.
VSCode doesn't accept a child and parent method with the same name but they have the same purpose.
The book I use doesn't use different name for this exercise and I don't understand why it doesn't work with me.
I found a solution by giving a different name to the child method but it doesn't help me to understand the problem.
Index.php
function monAutoLoad($class) {
include(str_replace("\\", "/", $class). ".php");
}
spl_autoload_register('monAutoLoad');
use MesProduits\Produit;
$ordinateur = new Produit("ordinateur",10,1200,false);
echo $ordinateur . "<br>";
echo $ordinateur->supprimerProduit(5) . "<br>";
use MesProduits\ProduitParLots;
$cartouchesEncre=new ProduitParLots("Cartouches d'encre",3,50,false);
$cartouchesEncre->setNbArticlesParLot(10);
$cartouchesEncre->ajouterProduit(6);
echo $cartouchesEncre . "<br>";
Produit.php (parent class file)
namespace MesProduits; //donner le même nom que le dossier parent
class Produit{
protected $nom = "mon produit";
protected $quantite = 10;
protected $prix = 120;
protected $rupture = false;
function __construct($nom,$quantite,$prix,$rupture)
{
$this->nom=$nom;
$this->quantite=$quantite;
$this->prix=$prix;
$this->$rupture=$rupture;
}
function __toString(){
return "nom: " . $this->nom . "<br>".
"quantité: " . $this->quantite . "<br>".
"prix: " . $this->prix . "<br>".
(($this->rupture)? "no stock <br>" : "in stock <br>");
}
function ajouterProduit($quantite){ //parent method and I want the same name in the child file
$this->quantite+=$quantite;
if($this->quantite >=0){
$this->rupture = false;
}
return "a product has been add <br>" .
"there is: " . $this->quantite . " in stock <br>";
}
function supprimerProduit($quantite){
$this->quantite-=$quantite;
if($this->quantite <=0){
$this->rupture = true;
}
return "a product has been removed <br>" .
"there is " . $this->quantite . " in stock <br>";
}
}
ProduitParLots.php (child file class)
namespace MesProduits;
class ProduitParLots extends Produit{
private $nbArticlesParLot;
function getNbArticlesParLot(){
return $this->nbArticlesParLot;
}
function setNbArticlesParLot($valeur){
if(!is_integer($valeur)){
echo "the property must be an integer <br>";
}else{
$this->nbArticlesParLot=$valeur;
}
}
function ajouterProduit2(){ //need to choose a different name for the child method
$this->quantite+=$this->nbArticlesParLot;
if($this->quantite>0) $this->rupture=false;
}
}

Answer 1

This is because the "child" method has not the same signature as the parent method. You missed the $quantite parameter.
class ProduitParLots extends Produit
{
function ajouterProduit($quantite) { /* ... */ }
}