How to create an array with objects in php - php

Question

I want to have an array with objects. For example.
public $aCarObjects = array();
$aCars = array('Audi','BMW','Ford');
foreach($aCars as $car){
array_push($aCarObjects, new Car($car));
}
// Simplified class
class Car implements C{
private $carName;
public function __construct($carName){
$this->carName = $carName;
}
}
interface C {}
This is a very shortened version of what I am trying. The class Car contains some info about the car.
When I am using the Interface C in the Car class. I cannot add objects to the array. Why is that so?

Answer 1

This error has nothing to do with arrays, it's a class hoisting bug (feature?) which is fixed by moving your class definition above the call to new Car. Apparently, PHP does not hoist class definitions if they implement an interface.
Here's a minimal example of the phenomenon.
Works:
new Foo();
class Foo {}
interface Bar {}
Doesn't:
new Foo(); # <-- error: Class 'Foo' not found
class Foo implements Bar {}
interface Bar {}
Perhaps this is a candidate for PHP Sadness?
Here's a working version of your code that also addresses a stray public keyword in line 1:
interface C {}
class Car implements C {
private $carName;
public function __construct($carName) {
$this->carName = $carName;
}
}
$aCarObjects = [];
$aCars = ['Audi', 'BMW', 'Ford'];
foreach ($aCars as $car) {
array_push($aCarObjects, new Car($car));
}
print_r($aCarObjects);
Output:
Array
(
[0] => Car Object
(
[carName:Car:private] => Audi
)
[1] => Car Object
(
[carName:Car:private] => BMW
)
[2] => Car Object
(
[carName:Car:private] => Ford
)
)
Try it!