So I have been searching for a while and cannot find the answer to a simple question. Is it possible to have an array of objects in PHP? Such as:
$ar=array();
$ar[]=$Obj1
$ar[]=$obj2
For some reason I have not been able to find the answer anywhere. I assume it is possible but I just need to make sure.
The best place to find answers to general (and somewhat easy questions) such as this is to read up on PHP docs. Specifically in your case you can read more on objects. You can store stdObject and instantiated objects within an array. In fact, there is a process known as 'hydration' which populates the member variables of an object with values from a database row, then the object is stored in an array (possibly with other objects) and returned to the calling code for access.
-- Edit --
class Car
{
public $color;
public $type;
}
$myCar = new Car();
$myCar->color = 'red';
$myCar->type = 'sedan';
$yourCar = new Car();
$yourCar->color = 'blue';
$yourCar->type = 'suv';
$cars = array($myCar, $yourCar);
foreach ($cars as $car) {
echo 'This car is a ' . $car->color . ' ' . $car->type . "\n";
}
color of just one Car in that array. Would you say echo $cars[0]->color; to print the first one, and echo $cars[1]->color; to print the second one?
$yourCar = new Car(); ? There is not some more elegant way to do that as in JS like let car = [{}, {},{}] ?Yes.
$array[] = new stdClass;
$array[] = new stdClass;
print_r($array);
Results in:
Array
(
[0] => stdClass Object
(
)
[1] => stdClass Object
(
)
)
You can do something like this:
$posts = array(
(object) [
'title' => 'title 1',
'color' => 'green'
],
(object) [
'title' => 'title 2',
'color' => 'yellow'
],
(object) [
'title' => 'title 3',
'color' => 'red'
]
);
// Then you can access it like this: $posts[0]->title
var_dump($posts);
array(3) {
[0]=>
object(stdClass)#1 (2) {
["title"]=>
string(7) "title 1"
["color"]=>
string(5) "green"
}
[1]=>
object(stdClass)#2 (2) {
["title"]=>
string(7) "title 2"
["color"]=>
string(6) "yellow"
}
[2]=>
object(stdClass)#3 (2) {
["title"]=>
string(7) "title 3"
["color"]=>
string(3) "red"
}
}
Yes, its possible to have array of objects in PHP.
class MyObject {
private $property;
public function __construct($property) {
$this->Property = $property;
}
}
$ListOfObjects[] = new myObject(1);
$ListOfObjects[] = new myObject(2);
$ListOfObjects[] = new myObject(3);
$ListOfObjects[] = new myObject(4);
print "<pre>";
print_r($ListOfObjects);
print "</pre>";
Arrays can hold pointers so when I want an array of objects I do that.
$a = array();
$o = new Whatever_Class();
$a[] = &$o;
print_r($a);
This will show that the object is referenced and accessible through the array.
Another intuitive solution could be:
class Post
{
public $title;
public $date;
}
$posts = array();
$posts[0] = new Post();
$posts[0]->title = 'post sample 1';
$posts[0]->date = '1/1/2021';
$posts[1] = new Post();
$posts[1]->title = 'post sample 2';
$posts[1]->date = '2/2/2021';
foreach ($posts as $post) {
echo 'Post Title:' . $post->title . ' Post Date:' . $post->date . "\n";
}
First of all create 2d array
$posts = array(
[
'title' => 'title 1',
],
[
'title' => 'title 2',
],
[
'title' => 'title 3',
]
);
$result = json_decode(json_encode($posts));
The result will return an array of objects.
Although all the answers given are correct, in fact they do not completely answer the question which was about using the [] construct and more generally filling the array with objects.
A more relevant answer can be found in how to build arrays of objects in PHP without specifying an index number? which clearly shows how to solve the problem.
