Can we create linked list in php

<?php
//node structure
class Node {
public $data;
public $next;
}
class LinkedList {
public $head;
public function __construct(){
$this->head = null;
}

//Add new element at the end of the list
public function push_back($newElement) {
$newNode = new Node();
$newNode->data = $newElement;
$newNode->next = null;
if($this->head == null) {
$this->head = $newNode;
} else {
$temp = new Node();
$temp = $this->head;
while($temp->next != null) {
$temp = $temp->next;
}
$temp->next = $newNode;
}
}
//display the content of the list
public function PrintList() {
$temp = new Node();
$temp = $this->head;
if($temp != null) {
echo “\nThe list contains: “;
while($temp != null) {
echo $temp->data.” “;
$temp = $temp->next;
}
} else {
echo “\nThe list is empty.”;
}
}
};
// test the code
$MyList = new LinkedList();
//Add three elements at the end of the list.
$MyList->push_back(10);
$MyList->push_back(20);
$MyList->push_back(30);
$MyList->PrintList();
//The output of the above code will be:
//The list contains: 10 20 30
?>

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