Augment an array using ORM objects - symfony

Question

I'm simply attempting to augment an array in Symfony like thus;
$inputters = $project->getInputters();
foreach($inputters as $in){
$ab[] = $in->getName();
}
$project is a Symfony entity. It turns out when I var dump $ab[] I actually get two separate arrays? Like thus:
array(1) {
[0]=>
string(9) "Bob Right"
}
array(1) {
[0]=>
string(14) "Sally Brown"
}
for example. But what I'm really after is a single array, like:
array(2) {
[0]=>
string(9) "Bob Right",
[1]=>
string(11) "Sally Brown"
}
for instance. The $project->getInputters() method returns a collection. Like:
Project
/**
* #ORM\ManyToMany(targetEntity="App\Entity\User", inversedBy="inputterProjects")
* #ORM\JoinTable(name="project_inputters",
* joinColumns={#ORM\JoinColumn(name="project_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="user_id", referencedColumnName="id")}
* )
* #var ArrayCollection<int,User>
*/
private $inputters;
/**
* #return Collection
*/
public function getInputters(): Collection
{
return $this->inputters;
}
Why is this simple array augmentation producing two separate arrays when I'm expecting only one?
Help.
edits;
foreach($inputters as $in){
$ab[] = is_array($in->getName());
}
array(1) {
[0]=>
bool(false)
}
array(1) {
[0]=>
bool(false)
}
edits1
foreach($inputters as $in){
$ab[] = get_class($in);
}
var_dump($ab);
array(1) { [0]=> string(15) "App\Entity\User" }
User
/**
* #return string
*/
public function getName(): string
{
return $this->name;
}

Answer 1

My loop was inside an array_map() construct. I think this was the issue. Knocking it out of whack.